3. Disable Wake on Wrist Raise
On pre-Series 5 and 6 models, the Apple Watch uses its gyroscope and accelerometer to instantly turn on the display for easy viewing whenever you raise your wrist. Unfortunately, this means that any time you raise your wrist the display will activate. Like when you’re watching a movie, or raising your hand, or stretching. And each time it does, battery life inevitably takes a tiny punch.
You can put an end to this by heading to Settings > General > Wake Screen and toggling off ‘Wake Screen on Wrist Raise’. You’ll then need to tap the screen or a button each time you want to wake the display. As we mentioned up top, Apple says this doesn’t affect battery life on the Series 5, so read on for more tips if you have the latest model.
4. Reduce motion
There are plenty of fancy graphical tricks in watchOS that are designed to make transitions as seamless as possible, but they also draw a little more power from the processor, which in turn draws a little more life out of that battery.
If you don’t need the neat melding animation to the app home screen or transparency effects when you swipe down on the notification pane, you can turn them both off in the Accessibility menu in the Watch app.
5. Unlock with iPhone
When you’re setting up your Apple Watch, it’ll ask you whether you’d like to turn on Unlock with iPhone. It works exactly like it sounds; when you unlock your iPhone, it’ll also unlock your Apple Watch.
You won’t have to type in your passcode on that tiny Watch screen, which is a wonderful convenience, but you’ll also save time not inputting a passcode, saving precious seconds of display time and, by extension, saving some battery life.