Apple offers the following advice for maximising Apple Watch battery performance:
- Ensure that your watch is always using the latest version of watchOS.
- If you would prefer to disable the heart rate sensor during walking and running workouts, turn on Power Saving Moden your iPhone, in the Watch app, go to: My Watch> Workout - turn on Power Saving Mode.
[*]For longer workouts, consider using a Bluetooth chest strap monitor, paired to your watch.[*]If your watch display activates more than you would prefer during general daily use, turn off the feature that activates the display when you raise your wrist:
On your iPhone, in the Watch app, go to: My Watch> General> Wake Screen> turn off Wake Screen on Wrist Raise.
[*]Always keep both Bluetooth and Wi-Fi permanently enabled on your iPhone.