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so i have a Backup-ups 850 BE850G2-UK (Serial: 5B2111T00688) that i bought to replace an older ups in may 2021.
All 4 lights are usually solid, meaning 100% charged, but i noticed a few days ago that the end light was flashing (so charging) and powerchute said it was 84% and charging.
it seems to very slowly increase and yesterday was on 91% but not going higher.
I woke up today and its back down to 84% and charging.
so i'm not sure whats going on - there have been no power events, so no discharge that i am aware of.
Passes a self test.
i only have my pc attached to the back up sockets and i turn that off at night, on during the day.
ok, now its 100% charged for the first time in a few days.
is this normal behaviour?
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