For the biggest runtime trade-off, turn on Low Power Mode; if you only want to reduce display drain, turn off Always On. You can also limit background refresh or, on supported watches, reduce GPS and heart-rate readings during long outdoor workouts. Apple does not quantify how many extra hours any one change provides, and some options disable health readings, alerts, or workout details.
Choose the change that fits what you need to keep
| Setting | When it helps | What you give up |
|---|---|---|
| Low Power Mode | When extending time between charges matters more than having every feature active. | Some readings, notifications, gestures, and network functions may be reduced or unavailable. |
| Always On off | When the display is the main concern and you want to leave other functions alone. | The watch face is no longer continuously visible. |
| Selective Background App Refresh | When some apps do not need to update in the background. | Those apps may not show the latest information until they refresh. |
| Reduced GPS and heart-rate readings | During supported long outdoor walking, running, or hiking workouts. | Workout alerts, splits, segments, and current pace are unavailable while reduced readings are active. |
Apple describes the effects of these features but does not give a measured battery-life gain for each one. Battery life also varies with watch age and use, so treat the changes as ways to reduce power use, not as a promise of a specific number of extra hours. Apple’s battery guidance explains that battery life depends on multiple factors.
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Turn on Low Power Mode for a broad reduction
Low Power Mode is the most comprehensive setting to try when you need the watch to last longer and can accept fewer active features. You can enable it from Control Center or Settings. Apple notes that some notifications may arrive less often or be unavailable, and some network connections are limited. Depending on the watch and settings, Low Power Mode can turn off Always On, background heart-rate and blood-oxygen readings, certain heart-rate notifications, gestures, and other features. Apple’s Low Power Mode guide lists the feature effects.
- Press the side button to open Control Center.
- Tap the battery percentage.
- Turn on Low Power Mode.
You can also open Settings on the watch and go to Battery to enable it.
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Switch off Always On if you mainly want to reduce display use
If you want to keep most watch functions available, turn off Always On rather than using a broader power-saving mode. On a compatible model, open Settings > Display & Brightness > Always On and switch it off. Apple says disabling Always On can increase battery life. Availability depends on the model; Apple lists Series 5 and later, SE 3, and Ultra and later among watches with Always On by default. Check your specific model and software for the setting. Apple’s Always On guidance has model details.
Limit Background App Refresh for apps that do not need timely updates
Background refresh lets apps update when you are not actively using them, which can use power. To reduce it, go to Settings > General > Background App Refresh on the watch. Turn refresh off for individual apps that do not need current background data, or disable it globally. Apple notes that complications displayed on the active watch face may continue to refresh. The watchOS user guide describes background refresh and battery use.
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Reduce GPS and heart-rate readings during supported outdoor workouts
For long outdoor walks, runs, or hikes, compatible watches can reduce GPS and heart-rate readings while Low Power Mode is active. This option requires watchOS 9.1 or later and Apple Watch SE (2nd generation), Series 8 and later, or Ultra and later. The trade-off is significant for workout tracking: workout alerts are off, splits and segments are not recorded, and current pace is unavailable. Use it when longer runtime is more important than those metrics. Apple’s Low Power Mode documentation describes supported models and workout effects.
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Battery drain may reflect signal conditions or battery condition rather than a setting you need to change. Apple recommends keeping the watch near its paired iPhone, using Wi-Fi instead of mobile data when away from the iPhone when possible, and preferring a strong signal. Airplane Mode may help where coverage is poor or absent.
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- If the drain began after a watchOS update, background tasks may temporarily affect battery life. Apple advises waiting a few days and checking again.
- To check battery condition, open Settings > Battery > Battery Health > Maximum Capacity.
- If the watch says service is needed, contact Apple Support.
- On watchOS 27, Apple says a notification may identify a feature it paused automatically and link to its setting. This behavior is version-specific, so check the watchOS version installed on your watch.
Apple’s current troubleshooting guidance was published September 18, 2026. See Apple’s battery troubleshooting steps for the current recommendations.
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