iPhone 15 Pro Max battery
Should I limit my iPhone battery to 80% and risk charging my phone more frequently or let it charge up to 100%?
iPhone 15 Pro Max, iOS 17
no matter what you do your battery will expire and die you can only delay the proceess
have you read
About the battery and performance of iPhone 11 and later - Apple Support
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