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OId laptop battery dies very quickly

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Laptop: Dell Inspiron N7110

My issue is not that the battery dies quickly. It's about 10 years old, and it lives on the charger, so I expect degradation.


The problem is that windows doesn't correctly detect the remaining capacity.

When unplugged, the laptop will quickly drain 100% --> 70% in about 20 minutes, then die, without triggering any automatic hibernation or sleep.


Is there something in the BIOS I can do reset the battery stats or something?


Or can I change Windows' automatic low-battery sleep to a much higher percentage (than the 5 or 10 percent default)?



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As far as I know, there is nothing you can do to change what it shows.


If it "lives on the charger" - why not just leave it plugged in.


If you must have it working on battery, just get a replacement (only £15 with warranty here in the UK) https://www.ebay.co.uk/itm/264882127653?hash=item3dac348325:g:5~UAAOSw~8leHR6h

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