battery health reducing with new update
The new ios 14.7 is killing by battery health.Its health was 94% before and after it was updated it reduced to 84% and now within one day its 82%? whyyyy
iPhone 8, iOS 14
You may need a new battery.
You will need apples help
https://getsupport.apple.com/ and or https://www.apple.com/retail/geniusbar/