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Start with the least disruptive changes: turn off Always On if your model supports it, limit Background App Refresh for apps that do not need timely updates, and keep the paired iPhone nearby. Use Low Power Mode for a broader reduction when runtime matters more than some health readings, notifications, display convenience, or connectivity. For long outdoor workouts, supported models can reduce GPS and heart-rate sampling, but you lose some workout metrics and alerts.
The best order for changing Apple Watch battery settings
Apple does not publish a universal number of hours saved by each individual setting. The useful question is therefore which compromises you accept, not which switch promises a fixed percentage. This order keeps everyday disruption low and reserves the more consequential options for situations that need them.
| Situation | Change to make | What you give up |
|---|---|---|
| Small everyday improvement | Turn off Always On, if available | The screen is not continuously visible when your wrist is down. |
| Fewer background updates | Disable Background App Refresh for selected apps or all apps | Some apps may take longer to show current information; complications on the active face can still refresh. |
| Maximum practical runtime for a day | Turn on Low Power Mode | Selected health measurements, heart-rate notifications, display behavior, notifications and connectivity can change. |
| Long outdoor walk, run or hike | Use fewer GPS and heart-rate readings while Low Power Mode is active | Current pace and some alerts, splits, segments or recording functions may be unavailable. |
| Unexpected drain after an update | Wait several days, then reassess Battery Health | There is no setting that immediately reverses a temporary post-update workload or degraded battery capacity. |
Turn off Always On for a modest daily saving
On supported Apple Watch models, Always On keeps the watch face dimly visible while your wrist is down. Disabling it is the simplest display-related battery change if you are comfortable raising your wrist or tapping the screen to check the time.
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- Open Settings on the Apple Watch.
- Tap Display & Brightness.
- Tap Always On and switch it off.
Apple says turning Always On off can increase battery life, but the display will no longer remain visible with the wrist down. The feature is model-dependent: Apple’s support documentation lists Apple Watch Series 5 and later, Apple Watch SE (3rd generation), and Apple Watch Ultra and later. Do not assume that every SE model has the switch; if Always On is absent, your watch does not support the feature or the installed software presents different options. See Apple’s Always On support page for the current model list.
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Restrict Background App Refresh without disabling notifications
Background App Refresh lets apps update content when you are not actively opening them. Apple identifies preventing background refresh as a battery-life measure. It is more selective than Low Power Mode because you can target only apps whose updates are not important to you.
Disable refresh for selected apps
- On the watch, open Settings.
- Choose General.
- Tap Background App Refresh.
- Turn off the apps that do not need to update in the background, or turn off Background App Refresh at the top to disable it globally.
Turning this setting off does not remove an app, and it does not by itself silence notifications delivered through Apple’s notification system. It means the app is less able to refresh data in advance. Weather, transport, fitness and other information may be older until the app runs or receives a new update.
There is an important exception: apps with complications on the currently active watch face can still refresh. If a complication is showing stale data, removing it from the face may be necessary; disabling Background App Refresh alone does not guarantee that every complication stops updating. Apple’s Apple Watch User Guide explains this behavior and the available controls.
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Low Power Mode is the broad option. It reduces power use across several systems rather than focusing on one app or the display. Choose it for a long day away from a charger, travel, or an activity where preserving charge is more valuable than having every measurement and connection behave normally.
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Turn Low Power Mode on
- Open Control Center by pressing the side button.
- Tap the battery percentage control.
- Turn on Low Power Mode, then choose a duration if the watch offers one.
You can also open Settings > Battery and enable Low Power Mode there. Apple documents an automatic option that turns it on when a workout starts in the Workout app, which is useful when you want the choice applied consistently to long sessions rather than remembering it manually.
Understand the trade-offs before enabling it
Low Power Mode turns off Always On automatically. It also disables selected background health measurements and some heart-rate notifications. Depending on the watch and software, notifications can be delayed, emergency alerts may not arrive, and some connectivity functions are limited. Read the explanation shown on the watch before confirming if you rely on continuous health tracking, immediate alerts or cellular connectivity.
Apple says the watch can prompt you to enable Low Power Mode when the battery reaches 10 percent. It normally turns Low Power Mode off automatically when the watch charges above 80 percent unless you selected a timed duration. These are operating thresholds, not estimates of how much battery the mode saves. Apple’s detailed behavior and exceptions are listed in Use Low Power Mode on your Apple Watch and If the battery in your Apple Watch drains too quickly.
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Supported watches can take fewer GPS and heart-rate readings during outdoor walking, running or hiking workouts while Low Power Mode is active. Fewer readings reduce the work required to track a long route, extending usable battery for the session at the cost of detail and immediacy.
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Compatibility to check
Apple documents this reduced-reading behavior for watchOS 9.1 or later on Apple Watch SE (2nd generation) and later, Series 8 and later, and Ultra and later. Confirm your exact model and watchOS version before relying on it; Apple can change the supported list as new hardware and software ship.
What the workout loses
With fewer readings, current pace may be unavailable. Workout alerts, splits and segments, and some recording functions can also be unavailable or less frequent. That makes the option better for a steady hike or long run where finishing with charge matters than for interval training, racing or sessions that depend on instant pace alerts. Enable Low Power Mode before starting, or use the Workout app’s automatic Low Power Mode option if your watch presents it. Apple’s instructions are in its Low Power Mode guide and battery troubleshooting guidance.
Improve battery behavior through connection and audio choices
Settings are only part of power use. Apple says a nearby paired iPhone is the most efficient connection arrangement, so keeping the two devices close can help during ordinary use. When the iPhone is away, Wi-Fi generally uses less battery than a mobile connection. A strong signal also uses less power than a weak one because the watch does not have to work as hard to maintain communication.
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- Keep the paired iPhone nearby when practical.
- If the iPhone is out of range, prefer a known Wi-Fi connection over cellular when you do not need mobile data.
- In an area with weak or no coverage, consider Airplane Mode if you do not need communications; repeatedly searching for a network can consume charge.
Audio played through the watch’s built-in speaker can drain the battery faster on newer models. Bluetooth headphones are more efficient for Watch audio playback, according to Apple. This matters most during long listening sessions, not a short spoken notification.
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Check Battery Health before changing more settings
If the battery suddenly seems worse, first distinguish a temporary workload from a worn battery. Open Settings > Battery > Battery Health and inspect Maximum Capacity. A lower capacity means the battery can hold less energy than when new; software switches cannot restore that lost capacity.
After a watchOS update
Apple says background tasks can continue for a few days after an update, even once the watch appears ready to use. Wait several days, use the watch normally, and check battery behavior again before concluding that the update permanently caused excessive drain. Restarting repeatedly or changing every setting at once makes the cause harder to identify.
When service is indicated
If the Battery Health screen says Battery Needs Service, contact Apple Support. That message is a hardware-service indication, not a prompt to install another battery-saving setting. Do not treat a low Maximum Capacity reading as something Low Power Mode can repair.
Protect long-term battery lifespan with Optimised Battery Charging
Battery life between charges and battery lifespan are different. Runtime describes how long the watch operates before the next charge. Lifespan describes how the rechargeable battery’s capacity changes over months and years.
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Optimised Battery Charging is designed to reduce the time the watch spends fully charged, which helps battery lifespan. Leave it enabled for normal charging. If you temporarily disable charge optimisation to reach a particular runtime goal, understand that convenience can carry a long-term lifespan trade-off. Apple explains the distinction in Apple Watch Battery and Performance.
A practical setup for common situations
Normal office or home day
- Leave Low Power Mode off if you need all health measurements and prompt notifications.
- Turn off Always On if you rarely glance at the dimmed face.
- Disable Background App Refresh only for apps whose data is not time-sensitive.
- Keep the iPhone nearby and use Bluetooth headphones for long audio sessions.
Travel day with limited charging
- Turn off Always On and unnecessary Background App Refresh first.
- Enable Low Power Mode when the remaining charge no longer covers the day.
- Use Wi-Fi rather than cellular when the iPhone is away and a reliable network is available.
- Use Airplane Mode only when you can accept losing normal wireless communications.
Long outdoor workout
- Confirm model and watchOS compatibility for reduced GPS and heart-rate readings.
- Enable Low Power Mode before starting, or configure the Workout app’s automatic option.
- Do not choose reduced readings if current pace, frequent splits, segments or workout alerts are essential.
What Apple does not quantify
Apple’s support pages describe which systems are reduced or disabled, but they do not provide a setting-by-setting runtime estimate. Battery results vary with watch age, usage, signal conditions, workout duration, audio playback and model. Apple summarizes this plainly: “Apple Watch battery life is a combination of many factors, including the age of your watch and how you use it.” The statement appears in its support article published September 18, 2026, at support.apple.com/en-gb/122789. Treat the 10 percent prompt and 80 percent automatic exit as mode thresholds, not promised savings.
The Bottom Line
Change Always On and Background App Refresh first for low-disruption savings. Use Low Power Mode when you accept broader feature trade-offs, and use reduced GPS and heart-rate readings only for compatible long outdoor workouts where battery endurance outweighs detailed live metrics. If drain persists after several days or Battery Health reports a service need, investigate the battery itself rather than stacking more settings.
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