Why My Phone Stop Charging At 80. At this point your phone should stop charging so head to your battery menu to verify. Im keeping all my devices on the charger almost all the time.

Your iPhones battery isnt faulty. Based on your habits usage and the alarm settings right before you would typically start using your phone it will begin charging again this time letting the phone get to a full 100 percent. The algorithm aims to ensure that your iPhone is still fully charged when.
At that point the iPhone will act as if it at 100 percent doing its best to conserve the percentage.
The major reason why your battery is not charging beyond the 80 mark is because your phone isnt letting it. Based on your habits usage and the alarm settings right before you would typically start using your phone it will begin charging again this time letting the phone get to a full 100 percent. As a result the charge never goes too much down and is charging back to 100 every time. In this video Ill explain why your iPhone iPad or iPod is not charging above 80.

