iFixit - Answers With Device "UPS"

APC Back-UPS Pro: Failed to charge the battery

Sun, 18 Jan 2026 01:10:18 -0700

The device failed the charge the battery.At first there was power after I turned it on after the backup time alapsed the device is unable to turn on again

⟐ Answered 1月 18, 2026 at 1:10 GMT-7

UPS: Check the correct functioning of the PCBA

Wed, 11 Sep 2024 14:13:51 -0700

Lately I can't see anything in the ViewPower program and when I contacted BlueWalker support they told me that the problem is the PCBA.

How can I check it to see if it really isn't working?

UPS Model: PowerWalker VI 1000 PSW Schuko

I have this:

How do I add port to Firewall exclusions in Windows 11?

In order to start, the following screen must appear:

How can I start it automatically?

I solved the problem.

⟐ Edited by author 9月 11, 2024 at 14:13 GMT-7

UPS: it won't charge the battery...

Sat, 13 Jan 2024 11:52:44 -0700

My CyberPower CP1500PFCLCD didn't know how old the battery was. I input the age and now it won't charge the battery...

⟐ Commented 1月 13, 2024 at 11:52 GMT-7

UPS: Homage UPS does not fully charge the battery.

Sun, 28 Aug 2022 11:58:37 -0700

Sir I have Homage UPS it charge the battery but not fully charge but show s fully charged and stop charging so when

Electricity off after half hour ups off.and stop working plz send solution on my email also ok

⟐ Answered 8月 28, 2022 at 11:58 GMT-7

UPS: My UPS is not charging the battery to full.

Fri, 26 Aug 2022 23:46:35 -0700

Hello,

So I watched a lot of YouTube videos and guides on using lithium batteries with UPS units as replacements for lead acid batteries. Which made me buy 2 new APC units with 2 new sets of lithium batteries to try out.

At first the APC units I bought from Amazon were defective, showed a massive load on them when nothing was plugged in. APC replaced them immediately with no issues.

The new ones I got I then pulled out the lead acid batteries and put in a new set of 12v 10ah lifepo4 batteries. Ran a 35w load on it and only got 1 hour and 40 mins of runtime.

So I figured it wasn’t fully charged, and waited 48 hours before my next test, this time it lasted 2 hours and 30 mins, still way below the 6+ hours it should be getting according to the math.

So I bought a different brand of batteries to test to see if it was the battery itself. After a few days of charging I checked both batteries voltage and both were at 26.5v so each battery was at 13.25v, the minimum and maximum voltage for these batteries are 11.4/14.8v so these were not fully charged, on both units.

Whats going on, and how do I fix this?

APC Unit: BR1500MS2

Batteries: MightyMax 12v 10AH LifePO4 Batteries, ECO-Worthy 12v 10AH LifePO4 Batteries

⟐ Answer deleted 8月 26, 2022 at 23:46 GMT-7

UPS: UPS power on but battery quick losing charge even with new battery

Mon, 13 Dec 2021 02:06:52 -0700

I have Cyberpower UPS, I had the battery replaced about 6 years ago recently the battery was completely dead so I figure it is time to buy a new battery. I replaced it with a new battery as I turned the UPS back on it has about 70% charge so I assumed everything should be working now it just needs to fully charge the battery. A few days later, the new battery was completely dead, I assumed I just got a faulty or old battery so I bought another. I put my 2nd new battery to put in my UPS, the first time I turn on the unit it showed 74% battery follow after that I turned it off and turned it back on again it showed 49% battery, this time I let the battery charge up. After 16 hours later, it only went up by 10% and it won’t charge up above 60% after that another 6 hours. Once again, I turned the UPS off so I can move to a different wall outlet to see if that make a difference, when I turned the UPS back on it showed only 7% battery left. I am thinking it is no longer a battery issue or rather my UPS might be the issue.

⟐ Commented 12月 13, 2021 at 2:06 GMT-7

UPS: APC Smart-UPS 1500va Bad Board? Bad Fan?

Mon, 22 Nov 2021 14:23:42 -0700

Hello,

I recently inherited an UPS from work. It looked practically brand new (very clean, no dust), but the company was going to get rid of it. Anyway, the battery was dead so I bought a replacement and swapped it in with no problem. However, whenever I’ve suffered from a power outage, the fan kicks on (as it should) but the fan never shuts off once power is restored and battery fully charged. On top of that, the fan makes a very loud noise that almost sounds like a helicopter.

I messaged APC and they said it was out of warranty and the issue could be a board.

After all of this, my question is: Is the board replaceable? If so, would anyone know a company that can service it or how to acquire a replacement board?

I’d really not like to shove out $600 if possible for a replacement.

⟐ Answer edited 11月 22, 2021 at 14:23 GMT-7

UPS APC RS 1000: How to fix a computer with no uprating system

Sat, 18 Sep 2021 12:30:02 -0700

My computer system is not working and I have been trying to fix it on my own but I cannot open my computer to see if I can remove the uprating system and replace it so is they any way I can fix my computer system on my own without opening my computer system. Please help me resolve my situation!

⟐ Answered 9月 18, 2021 at 12:30 GMT-7

UPS: Why is my UPS showing 68% battery after having fully charged?

Sat, 11 Sep 2021 04:41:35 -0700

I bought a 2nd hand UPS from Ebay, a Eaton 9130 Tower UPS 2000VA 1800Watt.

It doesn’t charge more than 91% and after charger is disconnected, and unit is rebooted. It shows charge level 68%.

What is wrong with my unit?

I bought this 2nd hand from ebay for $200.

⟐ Answered 9月 11, 2021 at 4:41 GMT-7

UPS: Is it a problem that a UPS replacement battery arrived with no charge?

Sat, 02 Jan 2021 21:31:19 -0700

I have 4 APC UPS’s, three Back-Ups 1000XL’s and one Smart-UPS 1500; every two to three years I end up having to replace the battery when the UPS starts complaining that the battery needs to be replaced. Usually when I buy a replacement battery the battery usually has at the very least a 20% charge on arrival but in the most recent instance where I bought a replacement battery it appears to have a zero charge when it arrived. Not knowing how long this sat with a zero charge, is this something to be terribly concerned about or will I still most likely get 2-3 years of good use out of the battery?

⟐ Commented 1月 02, 2021 at 21:31 GMT-7

UPS: apc Back-ups cs 500 amber on battery light flashing

Mon, 08 Apr 2019 13:53:55 -0700

i just bought a ups and it is flashing the on battery light rapedly. it does this even with a battery removed. any ideas?

⟐ Answer accepted 4月 08, 2019 at 13:53 GMT-7

UPS APC RS 1000: after replacing the battery, all lights flasing and no o.p.

Wed, 14 Nov 2018 15:05:26 -0700

after replacing the battery after long non use all the lights are flashing and and no output

⟐ Answered 11月 14, 2018 at 15:05 GMT-7

UPS: APC Back-UPS CS 500 does not power up?

Wed, 17 Jan 2018 01:22:36 -0700

Hi All,

The above device wasn't holding a charge, so I swapped out the battery, and it appeared to be fine for about a week.

Next thing I know, the "power" and "battery" lights were both on, but VERY dim indeed.

The device has now totally gone off and is unresponsive. I verified that the replacement battery isn't faulty as well.

Can anyone offer any assistance with this please? Thanks!

⟐ Commented 1月 17, 2018 at 1:22 GMT-7

UPS: My PC's UPS ZEB-U725 gets off while running

Mon, 22 Sep 2025 03:22:14 -0700

Why My PC's UPS ZEB-U725 gets off while running

⟐ Marked as duplicate 9月 22, 2025 at 3:22 GMT-7

UPS: My PC's ups gets off while running

Mon, 22 Sep 2025 03:22:14 -0700

Why my PC's ups turns off while running?

⟐ Marked as duplicate 9月 22, 2025 at 3:22 GMT-7

UPS: Issue UPS even OFF

Sat, 23 Aug 2025 00:13:46 -0700

Hello everyone, I come to you because my UPS is flawed. Indeed, my UPS makes a noise like clicking even when off. It looks like the clicking noise when the UPS start itself after power off. Except this time, it does it even without being ON. And, when I decide to put ON, it definitely put itself on work condition whatever there is power or not. The situation is that it can't load itself when network works. It can even stop my computer as it is always with empty battery. I have opened it but nothing abnormal at first view. What to do? Thanks

WE Nova 1000VA

⟐ Edited by author 8月 23, 2025 at 0:13 GMT-7

CyberPower 1000PFCLCD UPS: kenpa sleep mode pada komputer ketika dinyalahkan

Mon, 10 Feb 2025 08:30:05 -0700

kenapa slleep mode pada komputer ketika mulai start

UPS: Why isn't my UPS turning on?

Wed, 04 Dec 2024 02:37:59 -0700

I have a Powercom BNT V1.3 UPS, which I got from my uncle. It's a line-interactive model and decades old. Other than its obviously dead battery, it was working fine when I first received it.

Since the battery was dry, I attempted to revive it by adding water to the cells. Afterward:

I reconnected the battery.
I turned the UPS on to start charging the battery.

Unfortunately, after charging for a while, I heard a pop and saw a flash of light. I immediately turned the UPS off and noticed the smell of "magic smoke" from one of the components.

I later found out the battery had an internal short. Since then, the UPS hasn’t started.

Tested the transformer for continuity: it seems fine.
Fixed two broken traces on the back of the circuit board (see images below).

I am unable to identify which component might have failed. Any advice on what to check next or how to proceed would be greatly appreciated!

The UPS has not turned on since the incident.
I suspect some components may have been damaged, but I’m not sure which ones.

⟐ Edited by author 12月 04, 2024 at 2:37 GMT-7

Luminous Cruze 2 KVA pure sine wave UPS: Why is Not charging?

Wed, 04 Sep 2024 11:22:07 -0700

Why is Not charging?

APC-Schneider Uninterruptible Power Supply - BE700G-UK ES 700: Installed in computer and still won’t turn on

Fri, 30 Aug 2024 09:29:11 -0700

I installed the power pack as instructed and computer still will not turn on.

⟐ Answered 8月 30, 2024 at 9:29 GMT-7