Can you update my battery health 89% to 96%
I want to improve my battery health 89% to 96% because backup is 👍
iPhone 11 Pro Max, iOS 16
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no, not really rechargeable batteries are chemical processes, they begin to die
the day one begin to charge power from them, best you can do is to delay their death
read about how to delay it's demise
About the battery and performance of iPhone 11 and later - Apple
and maybe iPhone Battery and Performance - Apple Support
and Batteries - Maximizing Performance - Apple
people report apple does not change the batteries until they are lower than 80% in health