With watchOS 9, Apple is adding a new recalibration feature for the Apple Watch Series 4 and Apple Watch Series 5, according to the watchOS 9 release notes. Recalibration results in a more accurate estimate of maximum battery capacity.
After update On watchOS 9, your Apple Watch Series 4 or Series 5 will be recalibrated and will then estimate its maximum battery capacity more accurately, as has now become known. After the watchOS 9 update, owners of the Apple Watch Series 4 and Series 5 who noticed the incorrect battery life information should be able to better estimate the lifespan of their device.
watchOS 9 to help Apple Watch Series 4 & 5
Apple has already introduced a recalibration feature for the iPhone 11 to more accurately estimate the iPhone's battery life. But there hasn't been a similar feature for the Apple Watch yet. Recalibration is a process that can take several weeks because it requires multiple charging cycles of the Apple Watch. Whether your device is compatible with the new software, you can find out here. (Photo by TanyaKim / Bigstockphoto)
