How to Recalibrate the iPhone Battery
Apple released a battery calibration tool alongside iOS 14.5 which you can use to recalibrate your battery. If you don’t have iOS 14.5 or newer, you’ll have to update your operating system before using this tool. If your phone is fully updated and has the battery recalibration feature, it will run automatically and help improve your battery life over time. You can check its progress at any time in the battery health section of your iPhone settings. Here’s how to use the iPhone battery recalibration tool:
How Does iPhone Battery Recalibration Work?
The battery calibration tool introduced with iOS 14.5 calibrates your battery automatically, so you don’t need to turn on the feature. The calibration can take weeks, and even then, it’s an ongoing process. If you don’t see a message about the status of your recalibration, check back later. As it recalibrates your battery, you will see your Maximum Capacity and Peak Performance Capability change to reflect the actual status of your battery.
How to Calibrate Other iPhone Batteries
The iPhone battery calibration tool isn’t available for all iPhones, but another iPhone calibration process has been around a lot longer. This process requires you to fully drain the battery, which can be harmful to lithium-ion batteries like the ones found in iPhones. With that in mind, you should only use this calibration process if your battery life is already low, and you should only do it occasionally. If you only calibrate your battery every few months or when your phone needs it, the benefits you see from calibration should outweigh the potential harm done by allowing the battery to die completely. Here’s how to calibrate an older iPhone battery:
