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...the UPS sends a LB event and shuts down >immediatly as suggested in the manual. But the UPS powered off again. >The variables reported by upsc can be found here: >https://pastebin.com/JWmnp8iW >Graphs plotting the battery charge can be found here: >https://screenshots.firefox.com/iyTY8fAIB2MjXMV5/openmediavault.local >The battery charge drops suddenly when the UPS shuts down. Maybe I am completely wrong but this behaviour rhymes quite well with a faulty (old) battery which reports being charged but actually cannot really hold the charge. I suggest taking it off and verifying it with a...

> If there is no message to NUT, I would consider opening a trouble > ticket with Eaton. It is possible that there is a known issue and/or > a firmware upgrade. What kind of message to NUT? In the log (syslog) there is no other message registered. In nut.log only this appears: > Dec 1 08:10:54 openmediavault upsd[5284]: Data for UPS [ellipsemax] > is stale - check driver >

...again to 100%. Maybe the UPS sends a LB event and shuts down immediatly as suggested in the manual. But the UPS powered off again. The variables reported by upsc can be found here: https://pastebin.com/JWmnp8iW Graphs plotting the battery charge can be found here: https://screenshots.firefox.com/iyTY8fAIB2MjXMV5/openmediavault.local The battery charge drops suddenly when the UPS shuts down. When I power it on again, the batter starts charging from there. In the same instant of time, the USBDEVFS_CONTROL messages appear in the log: > Dec 2 18:39:59 openmediavault postfix/qmgr[2088]: 9E9F65001EB: &gt...