If MagSafe power supply is identified as null and zero, then MacBook embedded controller does not allow charging of main battery.
Open 'System Information.app', view 'Power' (subpage of 'Hardware'), look under heading 'AC Charger Information:'. For an idea of what 'AC Charger Information:' looks like, a clue as to what to look for, here is a screenshot. Pictured is a full 'Power' report; near bottom is 'AC Charger Information:'.
[image|1360085|caption=MagSafe ID is zero]
-
Does your Mac report information from connected MagSafe supply (Wattage, Serial Number), or does it display those fields as zeros?
+
Does your Mac report information from its power adapter, or does it display all fields as zeros?
-
If your MagSafe power supply is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inlet) is clean, then your MagSafe plug is at fault.
+
If your subject power adapter is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inlet) is clean, then MagSafe plug is at fault.
+
+
''How to fix it?''
+
+
Get a replacement MagSafe plug or cable assembly, and splice it on. If you cannot find a used Original Apple MagSafe tip, then a non-authorised replica is acceptable. One will be better-off with a counterfeit tip spliced onto genuine power supply, than a knock-off power supply.
Do not discard a misidentified MagSafe power supply. It is still useful.
-
-
-
ow to fix it
+
very similar problem, cross reference: [post|387540]
Open 'System Information.app', view 'Power' (subpage of 'Hardware'), look under heading 'AC Charger Information:'. Does your Mac report information from connected MagSafe supply (Wattage, Serial Number), or does it display those fields as zeros? If your MagSafe power supply is identified as null and zero, then MacBook embedded controller does not allow charging of main battery.
+
''What is wrong?''
-
For an idea of what 'AC Charger Information:' looks like, a clue as to what to look for, here is a screenshot. Pictured is a full 'Power' report; near bottom is 'AC Charger Information:'.
+
If MagSafe power supply is identified as null and zero, then MacBook embedded controller does not allow charging of main battery.
+
+
Open 'System Information.app', view 'Power' (subpage of 'Hardware'), look under heading 'AC Charger Information:'. For an idea of what 'AC Charger Information:' looks like, a clue as to what to look for, here is a screenshot. Pictured is a full 'Power' report; near bottom is 'AC Charger Information:'.
[image|1360085|caption=MagSafe ID is zero]
+
+
Does your Mac report information from connected MagSafe supply (Wattage, Serial Number), or does it display those fields as zeros?
If your MagSafe power supply is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inlet) is clean, then your MagSafe plug is at fault.
Do not discard a misidentified MagSafe power supply. It is still useful.
Open 'System Information.app', view 'Power' (subpage of 'Hardware'), look under heading 'AC Charger Information:'. Does your Mac report information from connected MagSafe supply (Wattage, Serial Number), or does it display those fields as zeros? If your MagSafe power supply is identified as null and zero, then MacBook embedded controller does not allow charging of main battery.
For an idea of what 'AC Charger Information:' looks like, a clue as to what to look for, here is a screenshot. Pictured is a full 'Power' report; near bottom is 'AC Charger Information:'.
-
[image|1360069|caption=MagSafe ID is zero]
+
[image|1360085|caption=MagSafe ID is zero]
-
If your MagSafe power supply is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inset) is clean, then your MagSafe plug is at fault.
+
If your MagSafe power supply is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inlet) is clean, then your MagSafe plug is at fault.
Do not discard a misidentified MagSafe power supply. It is still useful.
Open 'System Information.app', view 'Power' (subpage of 'Hardware'), look under heading 'AC Charger Information:'. Does your Mac report information from connected MagSafe supply (Wattage, Serial Number), or does it display those fields as zeros? If your MagSafe power supply is identified as null and zero, then MacBook embedded controller does not allow charging of main battery.
For an idea of what 'AC Charger Information:' looks like, a clue as to what to look for, here is a screenshot. Pictured is a full 'Power' report; near bottom is 'AC Charger Information:'.
[image|1360069|caption=MagSafe ID is zero]
If your MagSafe power supply is misidentified, then it might need cleaning or repair. Inspect MagSafe plug pogo pins. If middle pogo pin is dirty or sticky, then clean it or exercise it until it operates as it should. Inspect also MagSafe socket-inlet. If middle pogo pin (in MagSafe tip) is clean and springy, and middle land (in MagSafe inset) is clean, then your MagSafe plug is at fault.
Do not discard a misidentified MagSafe power supply. It is still useful.