APC Back-UPS BX800CI-RS y2014 manufaction date, including battery.
What happened before the issue:
There was a 1.5h hpower down with UPS and sleeping (suspended) PC connected to it.Probably it completely drained out UPS. Well, at least PC was found shuted down.
The issue itself:
1) I cut power for UPS, UPS works well and PC connected to it too. I turn power for UPS on again. Everything works fine.2) After 30-35 minues UPS suddenly cuts power for PC and produce constant tone. All light indicators are off.Here is the video https://www.dropbox.com/s/34leydo29fwzgr7/VID_20190727_215732.mp4?dl=0
Note:- I think 30-35 mins is a period of self-test after power outage. I think it always worked that way.- Issue is reproducible even with tiny load (like 7W LED lamp)- Computer runs on UPS well, so battery looks Ok.
Question is: is this 100% related to fact that battery is old and I just need just to replace battery, or it's some kind of UPS failure and it requires fixing?
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