Battery life
How long does my life battery last for?
iPhone 13 Pro Max, iOS 16
The measure of battery health deterioration/drainage is subjective and can vary depending on individual usage patterns. There is no universal standard to determine whether the battery health deterioration/drainage is normal or abnormal because it heavily relies on how the battery is used and maintained.
Protect & Prolong the Life of your iPhone's Battery:
- About the battery usage on your iPhone, iPad, and iPod touch ...
- Batteries - Maximising Performance - Apple (IN)
- iPhone Battery and Performance