Quote:
Originally Posted by Anonymouse
My laptop battery was slowly dying; as of yesterday it was at 24%.
That is, it was dying. Now it reads 100%. Not that I'm complaining, but what gives?
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Sudden changes in charge level can indicate a failing battery. Particularly a sudden increase if you plug the device in.
If the laptop is a Mac, there is an outside chance the System Management Controller needs resetting, which you can do by following the instructions at
https://support.apple.com/en-us/102605