How to get back battery health ?
How to get back better more than and more mobile battery health?
iPhone XS, iOS 14
Question marked as
You cannot. The battery health has nowhere else to go but down. This will happen as time elapses no matter what you do. You are not going to be able to increase battery health.
Here is some more reading on an iPhone battery and its performance ➔ iPhone Battery and Performance - Apple Support
Axel F.