What does battery recalibration mean?

IPhone 11 series users who have updated iOS14.5 can see important battery information prompted by the system after opening Settings Battery Battery Health. In the coming weeks, the battery recalibration function will recalibrate the battery capacity according to the charging and discharging conditions of the iPhone 11 series, so the final results cannot be seen immediately. It is recommended that you check the battery health after using it for a month.

At the same time, the maximum capacity given by the system is also marked with an asterisk, which means that the data is only the battery capacity before recalibration. After recalibration, the data will change, but it may not. Recalibrated maximum battery capacity will be more accurate.

What's the use of battery calibration?

Battery calibration refers to resetting the stored charging capacity and status information in the embedded battery management chip on the device so that it can more accurately reflect the actual power provided by the battery. Through battery calibration, the battery can be used for a longer and more stable time, and problems such as sudden shutdown caused by inaccurate power display can be reduced.