[Phone] What is Charging limit?
Leaving the battery fully charged for a long time (e.g. overnight charging) may reduce the battery's capacity. To prevent battery from aging, you can set up the Charging limit at 80% or 90%.
Swipe down from the top of the screen to access Quick Settings > Tap the Settings icon > Battery > PowerMaster > Battery care > Select the Charging limit ( ranges from 80% to 100%).