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My ipad mini 5 bought in March 2020… Just a month old… doesn’t charges above 80%when charged in afternoon… In morning I use all 100%… Then I charge at 4.. to 5 pm in the evening … But it only charges to 80%and doesn’t charges above 80% … But in early morning when I charge it charges 100%… Why is it so that it charges 100% early morning and ‘doesn’t charges above 80% in the evening time…’'
This is a battery management feature designed to extend the life of the battery. Keeping the battery charged to 100% 24 hours/day apparently chemically damages the battery. iOS will determine your typical use pattern and is supposed to only charge to 100% in anticipation of your use. Since you don’t use it at night, charge is limited to 80%; then, when your anticipated high-use time approaches it charges to 100% You used to be able to disable this feature; I just checked my iPad Mini5 under iOS 14.2 and that’s no longer an option.
