Question Ups draining without ac power

[sandvik.fredrik]

Hi,
Not sure if this is the right place to ask, but after searching i found several ups posts here so.. Foregive me if i do wrong

I have a Eaton 9130 ups, that drains the battery when its not connected to ac power. Had it disconnected a few houres today and when plugged in again it was at 85%. The batteries are not old, maybe half year or so. It holds the power for a while if turned on and i disconnected it from ac. So batteries seems to work fine.

I have another ups of the same model, this probably have the stock batteries in it. This has been sitting turned off and disconnected for several weeks and battery when checked is still at 100%.

What could cause this? Is it broken maybe?

 

[AllanGH]

How old is the UPS in question?

If it's at, or over, 3 years, it may be time to replace the battery/batteries.

 

[sandvik.fredrik]

How old is the UPS in question?

If it's at, or over, 3 years, it may be time to replace the battery/batteries.

Its probably 8+ years. But as i said the batteries are around 1 year old and holda the power fine when disconnected from the ups, or when the ups is online and looses ac power. It holds several minutes with my pc + 3 monitor + modem etc. So in that case it works fine.

But when its turned off, and disconnected from ac power, but batteries still connected it drains the batteries.
This does not happen to the other ups i have (same model, but i assume those batteries are older as they havent been changed, but works fine).

Must be something in the ups probably.. 🤔

 

[AllanGH]

Yup.....sounds like it.

If electronics is your thing, it might be worth spending the time to dive into it to find the issue but, on an 8+ year-old unit, it's probably just academic. Better to put that one out to pasture and get a new UPS.

 

[sandvik.fredrik]

Dont think i have to knowlage to fix it.
Its not a big problem tho, but a bit annoying when its turned off.

 

[AllanGH]

I can imagine....