Laptop mains presence logging

[dabbler]

I have a laptop running OMV software and I would like to check when mains disconnects and reconnects (time and date). 'dmesg' does not indicate when mains went off. Any other logging/app that does this?

 

[PhireSide]

Since OMV runs on Debian, you can try using upower

How to Check Battery Status Using Linux Command Line | Linux Journal

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