Use Optimized Battery Charging

Starting with iOS 13, Apple introduced optimized battery charging that will reduce the wear and tear on your battery. This smart charging feature keeps your battery at an optimal level while it’s charging, not allowing it to go to 100 percent until the end of a charging cycle. It most often activates during an overnight charge cycle where the battery is kept at 80 percent for the majority of the night and then jumps to 100 percent right before you usually wake up.