13 promax battery health
My battery health reached 96% within 9 months, should I be worried? The routine of charging my phone is from 20% to 90%
iPhone 13 Pro Max, iOS 16
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Your battery is doing better than average.
Batteries degrade over time with usage due to chemical aging, that's just how they work.
You can expect about a 1% drop per month with average use on an iPhone.
Apple recommends replacing it when it reaches 80%.
About Lithium Ion Batteries
iPhone Battery and Performance - Apple Support (IN)
Here are some tips on maximizing battery life.
Batteries - Maximizing Performance - Apple Batteries - Maximizing Performance - Apple