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HP Laptop drains battery while turned off
(lemmy.kde.social)
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Some level of self-discharge happens over time with even a disconnected battery, but that does seem greater than expected. I'd suspect hardware issues, to be honest. Batteries are fickle little creatures that deteriorate over time no matter what you do. Maybe it's misreporting the amount of charge left to the OS.
Probably there are problems with the report to the OS because the battery health is marked as 100%, which is a bit strange for a 4yo pc. Do you think this may have something to do with the battery drain?