![I've had my Series 4 for over a year and it still has 100% battery health. Only charging to 80% really does make a difference! : r/AppleWatch I've had my Series 4 for over a year and it still has 100% battery health. Only charging to 80% really does make a difference! : r/AppleWatch](https://i.redd.it/9hyogigk4e361.jpg)
I've had my Series 4 for over a year and it still has 100% battery health. Only charging to 80% really does make a difference! : r/AppleWatch
![Testing Apple Watch Series 4 half marathon battery life with cellular off: over 50% after 2 hours - 9to5Mac Testing Apple Watch Series 4 half marathon battery life with cellular off: over 50% after 2 hours - 9to5Mac](https://i0.wp.com/9to5mac.com/wp-content/uploads/sites/6/2018/12/watch-battery-half-marathon.jpg?resize=1200%2C628&quality=82&strip=all&ssl=1)
Testing Apple Watch Series 4 half marathon battery life with cellular off: over 50% after 2 hours - 9to5Mac
![Is your Apple Watch battery worn and in need of replacing? Here's how to tell without taking it off your wrist | ZDNet Is your Apple Watch battery worn and in need of replacing? Here's how to tell without taking it off your wrist | ZDNet](https://www.zdnet.com/a/img/resize/6f293c3d7a169aae11979b8bc835afb6885ee71e/2020/10/03/36ee4978-7f67-4f46-8855-c71c91f911af/img-6739x.jpg?width=1200&height=900&fit=crop&auto=webp)