Battery health (beta) for iphone 6 and later, ios 11.3 adds new features to show battery health and recommend if a battery needs to be replaced.. Learn how to check iphone battery health in 4 easy ways to find out if your iphone's battery needs to be serviced or replaced.. In ios 11.3, available now, apple is releasing a beta version of a new performance settings option called “iphone battery health.”.
In the new battery health settings page, there is also a new "peak performance capability" section that allows you to disable performance management and make your iphone always run at full speed despite having a battery that can no longer deliver "necessary peak power.". Battery health is be available on any model later than the iphone 6, and can be found in the “battery” section of the “settings” menu.. With ios 9 and later, you can check the amount of battery used by each app on your ios device..