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An Uninterruptible Power Supply (UPS) is an electrical device that provides backup power to critical equipment in the event of a power outage or other power-related issues.

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Ups not charging the battery

My ups is not charging. The problem is not of battery, what else should I check in the circuit.

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which model is your UPS?

Had you removed the battery and test with a multimeter?

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I have also a UPS which is not charging when i switch on power supply it show that your battery is full but actually it is empty....what is the problem and what i should to do for fixing this problem...?

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You can check your issues on Power Calculator by MSP Web Store. It will help you know your UPS

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my UPS always alarming and it says i need to replace my battery even though my battery is new one.

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@Papa Boknoy what make and model is your UPS? When did you replace the battery? What have you checked?

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Chosen Solution

These things usually have two batteries and usually one will fail before the other. Look at the diagnostics lights on it and tell us what you see.

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the green light is not stable. It comes on, and goes off immediately

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This is not a solution, and not helpful.

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When I plug it not show any indicator

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This is not a solution

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To test your unit charging capabilities, you can unplug your battery pack and put a DVOM on the outputs. You should see 24V+.

I as well have a Cyberpower, a couple of them actually. Batteries are dead but the unit says fully charged. Even with the batteries pulled out. I'm converting mine into solar generators, but I'm glad I tested these units out without plugging in expensive electronics. You know, the ones they're supposed to help save.

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Just did that! i got 13.87V on my outputs (1000PFCLCD). With the UPS switched on, and switched off.

I also noticed that with the UPS switched on, it turns on fine and shows a full battery. WITH THE BATTERY REMOVED! LOL. It doesn't even know there's not a battery there. I'm guessing that's related to the issue at hand.

Long out of warranty though.

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I have the same issue. CyberPower replaced my battery because I thought that was initially the problem. The replacement battery came charged, but ran down and isn't charging. It seems like the unit itself isn't charging the batteries.

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GS1500U 1. Bought 2 new batteries 2. The new batteries discharged to 0% 3. Reveived 2 more new batteries with 93% charge leaving the store 4. Hot home plugged it in to see if it would charge 5. It began to discharge from 93% to 84% 6. I let it run plugged into the wall with nothing plugged into it. 7. Awoke this morning to a 16% charge 8. That is a discharge from 93% to 16% in less than 24 hours with nothing plugged INTO the GS1500U. Any advice is appreciated to fix this.

Thank You

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Did you find a fix for this as I am having that same problem?

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@danielaleburgess have you chek the voltage battery ? let me show you how to chek

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look up “cyberpower yellow glue of death”.

Mine just died as well, I took it apart, and verified that it was indeed the yellow glue of death

CyberPower CP1500PFCLCD 1500VA

Supposedly they have stopped using the glue in the newest version models

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Dhrubajyoti Saikia will be eternally grateful.
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