The update to watchOS 9.4, which Apple is currently testing in beta, will include a process to recalibrate the battery capacity of the 44mm Apple Watch Series 6.
After updating to watchOS 9.4, the 44mm Apple Watch Series 6 can more accurately display the maximum battery capacity after recalibration estimateApple recalibrated the batteries of the Apple Watch Series 4 and Apple Watch Series 5 with the update to watchOS 9 and has now extended this process to the Apple Watch Series 6 44mm.
Recalibration of battery capacity: Now it's Apple Watch Series 6 users' turn
Battery recalibration has also been done for some iPhone models in the past, including the iPhone 11. Recalibration can improve the inaccurate battery capacity estimates that some users may see. (Image: Apple)