Is It Bad To Charge Your Phone At 100. A battery functions best when its kept between 40 and 80. It may put your mind at ease when your smartphones battery reads 100 percent charge but its actually not ideal for the battery.
This is not harmful to the phone but there is some risk. Charging your phone so it stays at 100 percent overnight isnt great news for the battery but thats not because youre cramming in more charge than it can handle. Charging a battery from 0 to 100 is equivalent to 1 cycle but not all charging is equally bad.
A battery functions best when its kept between 40 and 80.
Hence it is no surprise that smartphone users are forever in search of longer battery life. Rebooting your iPhone. According to Gizmodo Your battery will behave the best if you take it off the charge before it hits 100. But before you start.
