13mimi update 15.7. 1, the battery dropped one grid.

Normal phenomenon. The new system will recalibrate the battery health. After most Apple users push the system to update and upgrade the new version of iOS, the battery health will decline, so it is normal for the battery to drop by one grid after updating13mimi15.7.1. IPhone 13mini was released in ApplePark on September 202 1 year/early morning of kloc-0/5/Beijing time.