How To Check Battery Health Ios. There are various ways to check an iPhone or iPads health and diagnostics on iOS 14 as shown below. Launch the Settings app and select Battery.

These can be found in Settings Battery Battery Health. The application will display your devices runtimes adjusted accordingly or even show you further data of your battery depending on the iOS version. From here you can also toggle on Optimized Battery Charging.
Old answer reported not working on iOS 8 and above.
How to Perform a Battery Check on an iPhone. Customers should be able to check their item battery health this is especially important if buying a second hand device as this indicates how much the item was used. Launch the Settings app and select Battery. But with each charge cycle the battery gradually wears down and older devices or devices with faulty or damaged batteries can lose charge much quicker than that.
