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Use autocpu-freq.
My laptop battery life became much longer with no heavy performance effects.
And Check this out for how to limit battery changing to 80%: https://maniacx.github.io/Battery-Health-Charging/device-compatibility
finally, install powertop and switch to tunables tab and tweak appropiately. Becareful, you might make youre laptop unstable&laggy with powertop!!!
Interesting. Thanks, I had never heard of this before.
TLP used to be the gold standard for laptop battery management when I last looked. Not sure if there's a new kid on the block these days or whether Mint already has TLP installed or not, but that's where I'd start looking.
This might also contain some good info for laptop performance and battery life.
Hmm, I have indeed been successfully using TLP to limit battery charging to 80% but I haven't looked into what else it can do. Thanks for the reminder that it does more than just do that, haha. I guess I'll poke around to see if it can help reduce the depletion rate.
AFAIK one should also drain the battery to zero once a month and charge it fully (100%!) to recalibrate the battery capacity.
You can and should use then the device to get below 80% again.