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The safest way to extend Apple Watch battery life is to remove the feature you value least, not to switch on every power-saving control at once. Start by turning off or narrowing Always On, then disable Background App Refresh only for apps that do not need fresh information. Reserve Low Power Mode for days when you need extra endurance, and use reduced GPS and heart-rate readings only for eligible long workouts where missing detail is acceptable.
These changes preserve the functions that matter to you while making the trade-off visible. Apple does not publish a setting-by-setting percentage gain, so the right combination depends on whether your priority is an always-visible face, timely notifications, health measurements, or detailed workout tracking.
Choose the smallest trade-off first
Apple Watch battery life is affected by several independent features. A display setting changes how often the screen is active; background refresh affects how often apps update; Low Power Mode changes several systems at once; and reduced workout readings alter the frequency of GPS and heart-rate sampling. Treat them as separate controls rather than as one all-or-nothing battery switch.
| Adjustment | Best use | Important features retained | Main trade-off | Eligibility |
|---|---|---|---|---|
| Turn off Always On or limit wrist-down content | Everyday wear when you can raise your wrist to check the time | Normal wrist-raise display, apps, complications and notifications when you look at the watch | The face is not continuously visible, or selected wrist-down items are hidden | Settings vary by watch model and watchOS |
| Disable Background App Refresh selectively | Daily use when only a few apps need current data | Chosen apps can continue refreshing; face complications may still refresh | Unselected apps may show older information until opened | Available in watchOS; individual app controls may vary |
| Low Power Mode | Travel, long days or low-battery situations | Core Workout measures such as heart rate and pace can remain available | Always On, some background health measurements, heart-rate notifications, some connections and notification timing can be reduced | Current watchOS features differ by model |
| Fewer GPS and Heart Rate Readings | Long outdoor workouts on supported models | A lower-power workout record | No workout alerts, splits, segments or current-pace information, with less frequent readings | watchOS 9.1 or later; Series 8 or later, SE 2 or later, and Ultra or later according to Apple’s guide |
Make one change at a time when possible. That lets you identify which convenience you actually miss and avoids disabling health or notification features unnecessarily.
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Turn off Always On—or tailor what appears while your wrist is down
Always On is often the least disruptive feature to remove. With it off, the watch face is no longer continuously visible, but raising your wrist or tapping the display still gives you the normal face and its complications. If you only need to hide some information while the watch is idle, leave Always On enabled and limit its wrist-down content instead.
Disable Always On
- Open the Watch app on your iPhone.
- Tap My Watch, then Display & Brightness.
- Tap Always On and switch it off. On supported watches, the same control is available in the watch’s Settings app under Display & Brightness.
This is a good default for nights, desk work and travel if looking at the face requires only a wrist raise. It does not remove complications, alarms or notifications; it changes when the display remains visible.
Keep Always On but reduce wrist-down information
Apple lets you choose what remains visible while your wrist is down. In the Always On settings, review the controls for showing complications, notifications, apps and Live Activities. Turn off only the categories you do not need to see at a glance. You can preserve a clock and selected complication data while preventing a stream of notifications or app content from remaining on the dimmed display.
Use this narrower approach when glanceability matters. For example, a person who needs a continuously visible timer or calendar complication can keep those elements while hiding notifications. Someone who mainly checks the time can remove more wrist-down content and retain the same face for wrist raises.
Disable Background App Refresh for the apps that do not matter
Background App Refresh determines whether apps can update information when you are not actively using them. Disabling it globally is simple, but selective control is less disruptive: keep refresh for apps whose data you expect to be current and turn it off for apps that you open only occasionally.
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Change refresh permissions
- Open the Watch app on your iPhone.
- Tap My Watch, then General.
- Tap Background App Refresh.
- Use the main switch to disable refresh for all apps, or leave it on and switch off individual apps in the list.
The corresponding setting may also be available in the watch’s Settings app under General and Background App Refresh, depending on watchOS.
Choose what to keep
Preserve refresh for apps that feed information you check without opening the app, such as a complication you rely on for timely conditions or schedule data. Disable it for games, rarely used utilities and apps whose information can be refreshed when you launch them.
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Use Low Power Mode as a deliberate, temporary profile
Low Power Mode is broader than the two targeted changes above. It is useful when you need the watch to last through a long day, but it also changes health sampling, notifications and connectivity. Activate it when the additional runtime is more valuable than those conveniences, rather than leaving it on permanently by habit.
What Low Power Mode changes
- Always On is turned off.
- Background heart-rate measurements and blood-oxygen measurements are turned off.
- Heart-rate notifications are turned off.
- Some notifications may arrive later than usual.
- Some connections are limited.
Apple’s guide also describes Low Power Mode as compatible with core Workout measurements such as heart rate and pace. That means you can still record a useful workout without accepting every reduction available to the watch.
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Turn it on for a chosen duration
- Open Settings on the Apple Watch.
- Tap Battery, then Low Power Mode.
- Read the feature changes shown on screen and turn the mode on.
- If your watch offers a duration choice, select the period that matches the long day or trip instead of leaving it enabled indefinitely.
You can turn Low Power Mode off from the same screen when normal measurements, notification timing and connections become more important again. Because it already disables Always On, do not combine it with a separate Always On decision unless you are documenting a personal profile; the display change is included in the mode.
Extend a long outdoor workout with fewer readings
Outdoor workouts can consume more power because GPS and heart-rate sensors operate throughout the session. On supported watches, Apple provides a more aggressive option called Fewer GPS and Heart Rate Readings. It reduces how often those systems sample, so it is intended for endurance activities where finishing the recording matters more than having every current metric.
Check whether your watch qualifies
Apple documents this feature for watchOS 9.1 or later on Apple Watch Series 8 and later, Apple Watch SE (2nd generation) and later, and Apple Watch Ultra and later. Confirm the exact model and software version on your watch before planning around the setting; Apple can change feature availability by model and operating-system release.
Enable the reduced-reading option
- On the watch, open Settings.
- Tap Workout.
- Open the Low Power Mode options.
- Turn on Fewer GPS and Heart Rate Readings, if the control is shown.
- Start the outdoor workout and verify that the workout screens display the information you still need.
Apple’s reduced-reading mode removes more than measurement frequency. It gives up workout alerts, splits, segments and current pace. Do not use it for a training session that depends on pace alerts, interval splits or live segment feedback. For a long hike or steady endurance session where a lower-detail record is sufficient, the reduction can be a reasonable exchange.
Match the setting to the feature you cannot lose
Instead of asking which mode saves the most battery, identify the function that must remain reliable and work backward from it.
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If timely health information is essential
Start with Always On and Background App Refresh. These changes do not themselves disable the background heart-rate or blood-oxygen measurements that Low Power Mode turns off. Keep the face complication or app refresh that supplies information you actively use, and avoid Low Power Mode unless the remaining runtime is more important than those measurements.
If notifications must arrive promptly
Use the display controls and selective refresh first. Low Power Mode can delay some notifications, turn off heart-rate notifications and limit some connections, so it is a poor fit for a day when notification timing is the priority.
If you need a visible face but not a busy wrist-down screen
Leave Always On enabled and hide unnecessary notifications, apps, Live Activities or complication content while the wrist is down. This preserves the tailored glance view rather than replacing it with a fully dark display.
If the priority is finishing a very long workout
Check model eligibility, then consider Low Power Mode with the reduced-reading option. Accept the missing alerts, splits, segments and current pace before starting. If those metrics are part of the workout goal, use ordinary Workout readings and conserve power elsewhere instead.
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Apple says that tasks related to a watchOS update can continue in the background and affect battery life. A sudden drain after updating is therefore not, by itself, proof that a battery setting or hardware component has failed. The available guidance does not establish a fixed amount of time for those tasks to finish, so do not rely on a promised waiting period.
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During this period, check whether the drain began at the same time as the update and note whether it continues after background activity has settled. Avoid responding by enabling every power-saving feature at once, because that makes it harder to identify which behavior changed and may remove measurements or notifications you need.
A practical troubleshooting sequence
- Confirm what changed. Check whether Always On, Background App Refresh or Low Power Mode is enabled and whether a recent watchOS update preceded the drain.
- Apply one targeted change. Turn off Always On or remove refresh from one group of nonessential apps, then use the watch normally long enough to judge the effect.
- Protect required features. Restore refresh for apps whose complications or information became stale, or turn off Low Power Mode if notification timing or health measurements are important.
- Review workout settings before recording. On an eligible model, make sure reduced GPS and heart-rate readings are enabled only for sessions where the missing workout details are acceptable.
- Recheck after an update. If the watch was recently updated, allow for Apple-documented background tasks and compare behavior again rather than assuming a permanent battery fault.
- Use current model-specific guidance if the problem persists. Settings and eligibility are version-sensitive, so verify the instructions for the exact watch and watchOS release.
What these changes can—and cannot—tell you
Apple’s guidance describes the feature trade-offs but does not provide a universal runtime gain for turning off Always On, restricting Background App Refresh, enabling Low Power Mode or reducing workout readings. Battery capacity, model, software version, cellular use, workout duration and notification activity all affect the result. Treat any improvement you observe as specific to your configuration rather than as a guaranteed percentage for every watch.
A charger, charging dock or portable battery can restore a depleted watch while you are away from home, but it does not increase the time between charges while the watch is being worn. A replacement battery or repair kit also requires a model-specific diagnosis and supported repair instructions; configuration changes are the appropriate first response to ordinary feature-related drain.
Build a low-drain routine without giving up the essentials
For normal days, begin with selective Background App Refresh and a wrist-down display that shows only the complications and information you actually read. Keep the features tied to your health, safety or schedule. On an unusually long day, enable Low Power Mode for the needed period after reviewing its health, notification and connection changes. For a supported endurance workout, add reduced GPS and heart-rate readings only when alerts, splits, segments and current pace are not part of the plan.
This layered approach keeps the decision reversible: the least important display content goes first, then app refresh, then the broader Low Power Mode profile, with reduced workout sampling reserved for a specific activity. It extends usable time while making clear which information you have chosen to trade away.
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