Apple Watch Battery Saver – These features will be affected/disabled

The Apple Watch's power-saving mode, which Apple also calls Low Power Mode, is intended to increase the previous standard runtime of the Smartwatch from 18 hours to up to 36 hours. In the apple watch ultra The 36 hours of the standard battery life should even be up to 60 hours. But how can you activate and deactivate the Apple Watch power saving mode? And what restrictions ensure that electricity is saved? I answer these and other questions in this guide.

Activate Apple Watch power saving mode from watchOS 9

Is an Apple Watch compatible with watchOS 9 and updated to this or a newer operating system, then the low power mode can be used. If you want to activate the power saving mode on the Apple Watch, there are two ways to do this. On the one hand you can control center Call up, select the battery charge there and then activate the power saving mode in this submenu. 

Or you use the Apple Watch settings:

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  1. On the Apple Watch, open the Settings
  2. Tap on the point Battery (scroll down for this)
  3. Activates the slider at "Power Saving Mode"
You can switch the Apple Watch power saving mode on and off e.g. B. via the settings of the clock. In addition to the instructions, this guide gives you more information about the battery-saving mode of the Apple Watch.

You can switch the Apple Watch power saving mode on and off e.g. B. via the settings of the clock. In addition to the instructions, this guide gives you more information about the battery-saving mode of the Apple Watch.

You can easily see whether the low power mode is activated when you use the smartwatch regularly. Because this then shows a small, yellow circle at the top of the display. In the case of the pure time display above the dial, it is probably placed in the middle. When using watchOS or apps, it is placed next to the time at the top right (see above).

Automatic activation of the battery saving mode

Incidentally, the battery saving mode of the Apple Watch is triggered by the system itself when the battery level drops to 10 percent. It will then remain active until the battery has been recharged to 80 percent or more. There is an exception to this if you or the system have activated the option for several days. A regularly high consumption is then recognized and an attempt is made to throttle it using the savings option.

What does the Apple Watch battery saver mode affect?

Power consumption is saved on the smartwatch by slowing down or disabling various functions. It can also play a role whether the connected iPhone is nearby or not. Here is an overview of the features that are disabled / affected by the mode:

  • The always-on display is no longer used
  • The heart rate measurement in the background is suspended
  • The blood oxygen measurement in the background is also deactivated
  • There is no notification of heart rate (too high or too low) or irregular  heart rhythm
  • Reminders at the start of training are gone
  • It may take longer to connect to a call
  • There are fewer background updates for apps
  • There are fewer updates for complications
  • A Siri request may take longer
  • Scrolling and animations appear less fluid on the display
  • When iPhone isn't nearby, turn off Wi-Fi and cellular, and incoming calls and notifications (Wi-Fi and cellular reconnect when an app that needs them is opened)

What does this mean for the training app?

If the training app is active to measure certain values ​​during exercise, then of course it works. Similar to how the WiFi connection is restored for apps to be connected accordingly, heart rate and pace measurement is also reactivated when the training app is used. You can even set the training to always take place in low power mode to save battery. This can be done via Settings -> Training -> Set the slider for "Power saving mode". 

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