APC UPS - Which battery to change?

[mitchell1981]

Hi All,

 

We have a number of APC Smart UPS 5000 (SUA5000RMI5U) in our server room.

 

One of them has started to report that a battery need replacing but it isn't telling us which one. We've got a replacement ready to go but there are four batteries in the unit.

 

Do we have to manually test the batteries with a battery tester to see which one has failed, or are we overlooking a log somewhere that identifies the location of the failed battery?

 

Thanks.

[Sagima]

If the batteries are all the same age I'd be inclined to change them all at once rather than running old and new batteries in the same unit.

I have three of those UPSs but I can't see individual battery statuses in any of the web pages so you may be down to testing them yourselves.

[localzuk]

Its normal to change them all at once in a unit.

[GuyJD]

The APC software works on up-time, so testing the batteries will reveal nothing, best to check manufacturer dates on the batteries to see which is the oldest, that should be a good indication of which one is reporting the message. Edited February 28, 2017 by GuyJD

[MYK-IT]

We have the same UPS, I would (and we did) change all 4 batteries at once.

[mitchell1981]

Thanks all. I think we will follow the general advice and buy more batteries and replace them all. They are around 5 years old anyway so definitely due a replacement.