Charge Battery To 80 Percent. If you still cant get more than 80 and on battery alone computer only works for a short period its likely the battery is defective and will have to be replaced. This increases battery longevity as long as you can deal with the potential inconvenience of only having a 50 charge available when you disconnect from the wall.

It may not be possible to cap the battery charging at 80 however you can disable the battery charging when it reaches 80. Is it necessary to follow 40-80 charging rule. Dell Quickset application gives you an option to disable the battery charging.
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The issue wasnt an issue at all. The classic Control Panel will open to the Power Options section click the Change plan settings hyperlink. Instead the battery will be allowed to self-discharge down to 50 which normally takes a few days and only then will the system charge it back up to 80. Stops charging when power is above 60 and resumes charging when power is below 58.

