How To Turn On Power Save Mode Apple Watch. To disable Power Reserve mode and return your Apple Watch to normal mode you need to reboot the watch. Turn off your Apple Watch.
If your Apple Watch is off press and hold the side button until the Apple logo appears you might see a black screen for a short time first. To put your watch into the power reserve mode just drag the Power Reserve. Once youre in the Apple Watchs Power Reserve mode the only way to exit is to restart the watch.
Tap the Power Reserve button.
This will restart your watch so expect to wait 030-2. An external Bluetooth heart rate monitor will save the watch from having to take heart rate readings during exercise as will bringing your iPhone. Tap on the Battery Percentage reading. If your Apple Watch is off press and hold the side button until the Apple logo appears you might see a black screen for a short time first.
