How Does Iphone Battery Health Decrease. Because lithium batteries do not last forever they age over time from daily usage. Once you update your iPhone to iOS 113 you can check your iPhones total battery capacity with the Battery Health function.

7 decrease per year Will suddenly using a third-party 12W wall charger 5V24A. The OP is referring to battery health not battery life. I had been using the phone for 5 months now.
Your device will report its maximum capacity at the top of the screen.
This also in line with apple suggested way of uses. Apple reports a 20 loss of capacity for 500 cycles or 80 capacity should remain after 500 cycles 1 full charge refers to 1 cycle. Does anybody feel iPhone 12 battery health drop fast. When batteries degrade they can cause all sorts of problems for your iPhone from reduced battery life to performance issues.

