This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
-
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected or low risk problem not fatal enough to permanently flag the battery as “failed” and trip the “Permanent battery failure” POST error. For example, a battery may not charge temporarily to balance the cells, but if it happens too many times the permanent failure flag may trip - especially as the batteries get up in age like my E6440 65Wh the seller included.
+
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected or low risk problem not fatal enough to permanently flag the battery as “failed” and trip the “Permanent battery failure” POST error. For example, a battery may not charge temporarily to balance the cells, but if it happens too many times the permanent failure flag may trip - especially as the batteries get up in age like my E6440 65Wh from 2014 the seller included.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping if you can’t get it for free.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
-
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected or low risk problem not fatal enough to permanently flag the battery as “failed” and trip the “Permanent battery failure” POST error. For example, a battery may not charge temporarily to balance the cells, but if it happens too many times the permanent failure flag may trip.
+
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected or low risk problem not fatal enough to permanently flag the battery as “failed” and trip the “Permanent battery failure” POST error. For example, a battery may not charge temporarily to balance the cells, but if it happens too many times the permanent failure flag may trip - especially as the batteries get up in age like my E6440 65Wh the seller included.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping if you can’t get it for free.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
-
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
+
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected or low risk problem not fatal enough to permanently flag the battery as “failed” and trip the “Permanent battery failure” POST error. For example, a battery may not charge temporarily to balance the cells, but if it happens too many times the permanent failure flag may trip.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping if you can’t get it for free.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
+
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping if you can’t get it for free.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
-
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping.
+
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping if you can’t get it for free.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
-
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
+
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage - losing the battery hurts your wallet more then a few bucks for expedited shipping.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
-
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
+
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to get the replacement. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
-
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
+
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. '''The charger needs to be replaced.'''
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
-
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; Dell is good about shipping them before they go bad beyond a power source and it no longer works to charge the battery.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
+
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; when you’re under warranty, Dell is good about shipping them before they get worse and no longer charge the computer. Out of warranty ground with free shipping is a crapshoot.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
+
This pretty much means a bad battery or charger. The early 130W chargers seem to be affected worse then the lower wattage units and revised units. '''If Dell is molded into the plastic enclosure on the blank side of the later one it is a early failure prone one, and should be replaced.''' If it works and was just a fluke, keep it as a working spare but don’t rely on it - it’s a matter of when! At this point in time, you want the slim 130W ('''DP/N: 0VJCH5 or newer) or the 130W [https://www.dell.com/en-us/shop/dell-slim-power-adapter-130-watt-with-3-ft-power-cord/apd/332-1829/pc-accessories|slim retail model]'''. The reliable revisions don’t have any molding in them and the Dell logo is only found on the spec label. '''If you're under warranty contact Dell and get it replaced NOW; it’s a ticking time bomb!''' If you’re out of warranty, you’re on your own so choose which one you want.
-
If you have determined you are dealing with one of these problematic chargers, it’s better to replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. These don’t have any molding in them and the Dell logo is only found on the identifying label. If you're under warranty contact Dell and get it replaced. If you’re put of warranty, you’re probably going to be on your own.
+
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", they send you a new unit and you send the bad one back if you’re under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but it’s a matter of WHEN it stops charging; Dell is good about shipping them before they go bad beyond a power source and it no longer works to charge the battery.''' If you are out of warranty, troubleshoot it before buying a new adapter by checking the [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|indicator lights].
-
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", then you’re not going to have a hard time getting it done; especially if it’s under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but by NO MEANS is it permanent. It WILL permanently fail sooner or later.'''
-
-
That being said if you are out of warranty, it’s probably a good idea to do some additional troubleshooting. Check the indicator lights against this support document and you will know where the fault lies: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
-
-
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not flagged by the BMS where the battery wasn’t disabled. The BMS will always catch critical failures, but not all minor ones. These packs usually indicate this with a permanent battery failure POST warning. Replace the battery if you get this POST error or the issue persists.
-
-
If you replaced the charger and it's replacing one of the early units, keep it and stop using the early charger regularly - keep it as a working spare. Once it fails, scrap it. '''The early chargers are bad and should not be used in a mission critical environment.'''
+
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not fatal enough to permanently flag it at the BMS level, but it just won’t charge anymore. If it says “Permanent battery failure” after trying the adapter during POST, the battery was at fault.
'''What's wrong with these early chargers?'''
-
The early 130W units likely have problems with the 8 pin sense IC. This is bad since the BIOS reads it. If it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
+
The early 130W units have more problems with the 8 pin sense IC, and the BIOS cannot detect the wattage and charger vendor (Dell). If it can't make out what the charger *is*, charging is blocked and machines often throttle. The only way for it to work correctly is for the charger to identify as Dell and register the correct wattage.
'''Can I still use the charger?'''
-
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
+
Whether you can use the charger or not depends on the severity. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
If you have determined you are dealing with one of these problematic chargers, it’s better to replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. These don’t have any molding in them and the Dell logo is only found on the identifying label. If you're under warranty contact Dell and get it replaced. If you’re put of warranty, you’re probably going to be on your own.
-
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", then you’re not going to have a hard time getting it done; especially if it’s under warranty. If you need to use it and don't have a spare, it can be “fixed” temporarily but by NO MEANS is it permanent.
+
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", then you’re not going to have a hard time getting it done; especially if it’s under warranty. '''If you need to use it and don't have a spare, it can be “fixed” temporarily but by NO MEANS is it permanent. It WILL permanently fail sooner or later.'''
That being said if you are out of warranty, it’s probably a good idea to do some additional troubleshooting. Check the indicator lights against this support document and you will know where the fault lies: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not flagged by the BMS where the battery wasn’t disabled. The BMS will always catch critical failures, but not all minor ones. These packs usually indicate this with a permanent battery failure POST warning. Replace the battery if you get this POST error or the issue persists.
-
If you replaced the charger and it's replacing one of the early units, keep it and stop using the early charger regularly - keep it as a working spare. Once it fails, scrap it. '''The early chargers should not be used in a mission critical environment.'''
+
If you replaced the charger and it's replacing one of the early units, keep it and stop using the early charger regularly - keep it as a working spare. Once it fails, scrap it. '''The early chargers are bad and should not be used in a mission critical environment.'''
'''What's wrong with these early chargers?'''
-
These early 130W units likely have problems with the 8 pin sense IC. This is bad since the Dell computer reads it and if it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
+
The early 130W units likely have problems with the 8 pin sense IC. This is bad since the BIOS reads it. If it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
-
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
-
-
This is the workaround I used until the replacement chargers I got from Dell came and it has always worked. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on how bad the problem is.
+
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger. '''My experience is beyond 5 days, it becomes more difficult to get it to work. YMWV.'''
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
If you have determined you are dealing with one of these problematic chargers, it’s better to replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. These don’t have any molding in them and the Dell logo is only found on the identifying label. If you're under warranty contact Dell and get it replaced. If you’re put of warranty, you’re probably going to be on your own.
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", then you’re not going to have a hard time getting it done; especially if it’s under warranty. If you need to use it and don't have a spare, it can be “fixed” temporarily but by NO MEANS is it permanent.
That being said if you are out of warranty, it’s probably a good idea to do some additional troubleshooting. Check the indicator lights against this support document and you will know where the fault lies: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not flagged by the BMS where the battery wasn’t disabled. The BMS will always catch critical failures, but not all minor ones. These packs usually indicate this with a permanent battery failure POST warning. Replace the battery if you get this POST error or the issue persists.
If you replaced the charger and it's replacing one of the early units, keep it and stop using the early charger regularly - keep it as a working spare. Once it fails, scrap it. '''The early chargers should not be used in a mission critical environment.'''
'''What's wrong with these early chargers?'''
These early 130W units likely have problems with the 8 pin sense IC. This is bad since the Dell computer reads it and if it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
'''Can I still use the charger?'''
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
-
This is the workaround I used until the replacement chargers I got from Dell came and it has always worked. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
+
This is the workaround I used until the replacement chargers I got from Dell came and it has always worked. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on how bad the problem is.
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
-
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement. If you need to use it and don't have a spare, I've outlined a workaround in this answer.
+
If you have determined you are dealing with one of these problematic chargers, it’s better to replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. These don’t have any molding in them and the Dell logo is only found on the identifying label. If you're under warranty contact Dell and get it replaced. If you’re put of warranty, you’re probably going to be on your own.
-
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
+
If the BIOS complains, Dell usually tries the charger first. If it says "unidentified charger", then you’re not going to have a hard time getting it done; especially if it’s under warranty. If you need to use it and don't have a spare, it can be “fixed” temporarily but by NO MEANS is it permanent.
-
If replacing the charger doesn't fix it,it's a battery problem.The battery has a problem the BMS never detected,since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
+
That being said if you are out of warranty, it’s probably a good idea to do some additional troubleshooting. Check the indicator lights against this support document and you will know where the fault lies: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
-
If you replace the charger and reboot the system to get a POST error relating to a permanent battery failure, the battery will need to be replaced.
+
If replacing the charger doesn't fix it, it's a battery problem. This is typically a undetected problem not flagged by the BMS where the battery wasn’t disabled. The BMS will always catch critical failures, but not all minor ones. These packs usually indicate this with a permanent battery failure POST warning. Replace the battery if you get this POST error or the issue persists.
-
If you replaced the charger and it's replacing one of the early units, I'd suggest keeping it unless you replaced it under warranty. Put the old one aside as a spare and relegate it to that since it's only a matter of time before it also ends up failing. Don't use it in a mission critical environment either.
+
If you replaced the charger and it's replacing one of the early units, keep it and stop using the early charger regularly - keep it as a working spare. Once it fails, scrap it. '''The early chargers should not be used in a mission critical environment.'''
'''What's wrong with these early chargers?'''
These early 130W units likely have problems with the 8 pin sense IC. This is bad since the Dell computer reads it and if it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
'''Can I still use the charger?'''
-
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this problem comes up.
+
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this happens.
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
-
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
+
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, this is sufficient to get the laptop to accept the charger again. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. Replace it ASAP once you identify the issue has happened to you. The sense IC may not last too long. It typically works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
-
This is the workaround I used until the replacement chargers I got from Dell came and it always worked for me. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
+
This is the workaround I used until the replacement chargers I got from Dell came and it has always worked. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement. If you need to use it and don't have a spare, I've outlined a workaround in this answer.
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If replacing the charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
If you replace the charger and reboot the system to get a POST error relating to a permanent battery failure, the battery will need to be replaced.
-
If you replaced the charger and it's replacing one of the early units, I'd suggest keeping it. Put the old one aside as a spare and relegate it to that since it's only a matter of time before it also ends up failing. Don't use it in a mission critical environment either.
+
If you replaced the charger and it's replacing one of the early units, I'd suggest keeping it unless you replaced it under warranty. Put the old one aside as a spare and relegate it to that since it's only a matter of time before it also ends up failing. Don't use it in a mission critical environment either.
'''What's wrong with these early chargers?'''
These early 130W units likely have problems with the 8 pin sense IC. This is bad since the Dell computer reads it and if it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
'''Can I still use the charger?'''
+
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this problem comes up.
+
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
This is the workaround I used until the replacement chargers I got from Dell came and it always worked for me. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
-
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement.
+
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement. If you need to use it and don't have a spare, I've outlined a workaround in this answer.
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If replacing the charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
If you replace the charger and reboot the system to get a POST error relating to a permanent battery failure, the battery will need to be replaced.
+
If you replaced the charger and it's replacing one of the early units, I'd suggest keeping it. Put the old one aside as a spare and relegate it to that since it's only a matter of time before it also ends up failing. Don't use it in a mission critical environment either.
'''What's wrong with these early chargers?'''
-
The problem with these early chargers is likely caused by the 8 pin sense IC in the charger, since it can't properly identify as a Dell charger, nor can it identify the wattage of the charger. The computer will block the ability to charge the battery as a protective measure.
-
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with a special workaround.However, this workaround is not a permanent fix in lieu of replacing the charger. If this workaround doesn't work, the sense IC is damaged to the extent you will not be able to use that charger to charge the battery ever again. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
+
These early 130W units likely have problems with the 8 pin sense IC. This is bad since the Dell computer reads it and if it can't make out what the charger *is*, it won't charge the laptop and may even throttle it. The only way for it to work correctly is for the charger to identify as Dell and register the wattage to the system.
-
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and discard the old one so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
+
'''Can I still use the charger?'''
+
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with the problematic sense IC, but it's just a temporary workaround. The charger needs to be replaced once this problem comes up.
+
If the sense IC is so bad you can't get it to register at all (even with the workaround), you'll need to replace it to avoid throttling and be able to charge the battery. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
+
+
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and ID the old one as bad so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
This is the workaround I used until the replacement chargers I got from Dell came and it always worked for me. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement.
-
The problem with these early chargers is likely caused by the 8 pin sense IC in the charger, since it can't properly identify as a Dell charger, noe can it identify the wattage of the charger. The computer will block the ability to charge the battery as a protective measure.
+
+
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
+
+
If replacing the charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
+
+
If you replace the charger and reboot the system to get a POST error relating to a permanent battery failure, the battery will need to be replaced.
+
If you replaced the charger and it's replacing one of the early units, I'd suggest keeping it. Put the old one aside as a spare and relegate it to that since it's only a matter of time before it also ends up failing. Don't use it in a mission critical environment either.
+
+
'''What's wrong with these early chargers?'''
+
The problem with these early chargers is likely caused by the 8 pin sense IC in the charger, since it can't properly identify as a Dell charger, nor can it identify the wattage of the charger. The computer will block the ability to charge the battery as a protective measure.
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with a special workaround. However, this workaround is not a permanent fix in lieu of replacing the charger. If this workaround doesn't work, the sense IC is damaged to the extent you will not be able to use that charger to charge the battery ever again. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and discard the old one so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
This is the workaround I used until the replacement chargers I got from Dell came and it always worked for me. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
-
-
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
-
-
If buying a newer charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
-
-
If you reboot the system and it says the battery suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
-
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from the charger on later versions. If you're under warranty contact Dell and have them replace it out of warranty. If you're out of warranty you'll have to purchase the new charger yourself. Dell will often replace the power adapter right away if the problem manifests as an "unidentified charger".
+
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from later revisions of the charger. If you're under warranty contact Dell and have them replace it. If you're out of warranty you'll have to purchase the new charger yourself. If your computer's BIOS complains, Dell will often replace the charger first. If it says "unidentified charger", you're set for a easy warranty replacement.
+
The problem with these early chargers is likely caused by the 8 pin sense IC in the charger, since it can't properly identify as a Dell charger, noe can it identify the wattage of the charger. The computer will block the ability to charge the battery as a protective measure.
-
The problem these early chargers are known for likely lies with the 8 pin IC used to tell the computer if the charger is a Dell unit or not. Dell laptops don't like to charge unless the charger identifies correctly. If you can get it to work with the workaround I've used to use the charger until my new one came,it's likely an issue with the sense IC having bit rot problems. If it doesn't, the sense IC is bad and there's really not much you can do outside of getting expedited shipping to reduce your downtime unless you have a spare charger.
+
Whether you can use the charger or not depends on the failure mode. If the sense IC is intermittent, you can often use the charger with a special workaround. However, this workaround is not a permanent fix in lieu of replacing the charger. If this workaround doesn't work, the sense IC is damaged to the extent you will not be able to use that charger to charge the battery ever again. Order a new charger with expedited shipping to minimize (or prevent) battery damage.
-
If you need you use your old charger until the new one arrives, one workaround that seems to get these early units to behave for a little while is to unplug it until the blue LED ring goes out and then try again. More often then not this will fix the problem until the sense IC gets confused again. This procedure can often be used for weeks before it stops reliably fixing the problem. It worked for me until Dell could replace my failed chargers 100% of the time, but since I often got them with 3 day shipping I could never test how long this workaround would work.
+
If you need to use the old charger until your new one arrives, unplug the charger until the LED ring on the charger tip goes out. Once it goes out, try again. More often then not, you will find this is sufficient to get the laptop to accept the charger without rejection. Do this until your new charger arrives and discard the old one so you don't mix the chargers up. I wouldn't push it more then you need to since it's only a matter of time before you will find the sense IC has failed completely. This fix generally works for ~1-2 weeks, which gives you plenty of time to order it and receive your new charger.
+
+
This is the workaround I used until the replacement chargers I got from Dell came and it always worked for me. It usually stopped working reliably past 5 days or so, but your mileage will vary depending on the extent of the problem with the sense IC.
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If buying a newer charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
If you reboot the system and it says the battery suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related,especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
+
This pretty much means a bad battery or charger. The early Dell 130W chargers seem to be affected by this problem far more then other Dell chargers. The easiest way to identify these troublesome chargers is to check if '''Dell''' is molded into the plastic enclosure on the blank side.
-
The older chargers are known to do this from time to time, which is why Dell updated it with a newer unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet,unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so the 65W adapters seem to be less troublesome.
+
If you have determined you are dealing with one of these early chargers, replace it with a newer unit. At this point in time, this is the charger you want: '''DP/N 0VJCH5 or newer'''. You want the charger with the unmolded top, since they removed the Dell stamp from the charger on later versions. If you're under warranty contact Dell and have them replace it out of warranty. If you're out of warranty you'll have to purchase the new charger yourself. Dell will often replace the power adapter right away if the problem manifests as an "unidentified charger".
-
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
+
The problem these early chargers are known for likely lies with the 8 pin IC used to tell the computer if the charger is a Dell unit or not. Dell laptops don't like to charge unless the charger identifies correctly. If you can get it to work with the workaround I've used to use the charger until my new one came, it's likely an issue with the sense IC having bit rot problems. If it doesn't, the sense IC is bad and there's really not much you can do outside of getting expedited shipping to reduce your downtime unless you have a spare charger.
-
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.
+
If you need you use your old charger until the new one arrives, one workaround that seems to get these early units to behave for a little while is to unplug it until the blue LED ring goes out and then try again. More often then not this will fix the problem until the sense IC gets confused again. This procedure can often be used for weeks before it stops reliably fixing the problem. It worked for me until Dell could replace my failed chargers 100% of the time, but since I often got them with 3 day shipping I could never test how long this workaround would work.
+
+
However, If you are out of warranty you should do some self troubleshooting before buying replacement parts. Check the indicator lights against this support document first: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
+
+
If buying a newer charger doesn't fix it, it's a battery problem. The battery has a problem the BMS never detected, since the problem is likely intermittent and not persistent. If it was serious, the battery is far more likely to be bricked with a permanent battery failure POST warning as soon as the BMS detects the problem.
+
+
If you reboot the system and it says the battery suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related, especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
-
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so the 65W adapters seem to be less troublesome.
+
The older chargers are known to do this from time to time, which is why Dell updated it with a newer unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so the 65W adapters seem to be less troublesome.
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related, especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
-
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so 90W adapters seem to be less troublesome.
+
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so the 65W adapters seem to be less troublesome.
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related, especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so 90W adapters seem to be less troublesome.
-
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN265807|E6540 diagnostic lights]
+
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN155342/diagnostic-and-battery-indicators-for-latitude-notebooks-and-tablets?lang=EN|E6540 diagnostic lights]
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related, especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so 90W adapters seem to be less troublesome.
-
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: E6540 diagnostic lights
+
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: [http://www.dell.com/support/article/us/en/4/SLN265807|E6540 diagnostic lights]
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.
This pretty much means a bad battery or charger. It's sometimes charger related, especially if the charger is old enough to have Dell molded into the top part of the enclosure. If your charger is one of these, find a newer one with a blank enclosure with the DP/N 0VJCH5. If this doesn't fix it, you have to replace the battery.
The older chargers are known to do this from time to time, which is why Dell updated it with a newer Delta unit. The 0VJCH5 unit seems to be reliable, compared to the previous chargers. If for some reason you can't replace the charger yet, unplug it once in a while and see if that clears the problem up. This is what worked for me while Dell was shipping my new unit when I complained about this problem. It's related to the sense line, since these chargers use a 8 pin IC, generally. These IC's sometimes have bit rot issues or outright fail. If the charger responds to my workaround, it's intermittent or bit rot. If that doesn't help, the sense IC is bad. This only seems to happen a lot on the 130W unit, so 90W adapters seem to be less troublesome.
If the machine is under warranty and you have the 130W unit, contact Dell and get a new charger, although mine was giving me the unauthenticated charger problem. If you are out of warranty, give this a read: E6540 diagnostic lights
If you reboot the machine and it says it suffered a permanent battery failure, you will need a new battery.