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Your smartwatch battery isn’t dying because the watch is broken. It’s usually dying because a few settings are quietly eating it. Fix those and most watches last noticeably longer, sometimes a full extra day.
Turn off the always-on display
This is the biggest single drain on most watches. The screen staying lit all day costs a lot of power. Turn it off and the screen wakes when you raise your wrist instead. You’ll barely notice the difference, and your battery will.
Lower the brightness
Auto brightness is fine, but if your watch lets you cap it, a notch or two lower helps. Bright screens look great in the store and drain fast at home.
Cut down notifications
Every buzz wakes the screen and the vibration motor. Go through your phone’s watch app and turn off notifications from apps you don’t need on your wrist. Group chats are usually the worst offenders.
Change heart rate and health tracking frequency
Continuous heart rate, blood oxygen tracking at night, and stress tracking all use power. Many watches let you switch them to periodic readings or turn some off entirely. Keep the ones you actually look at.
Be smart about GPS
GPS is a battery hog. Use indoor workout modes for treadmill runs and gym sessions so GPS stays off. Some watches have lower-power GPS modes for long outdoor activities, which is worth using on all-day hikes.
Turn off things you don’t use
Wi-Fi, always-listening voice assistants, wrist-raise for voice, LTE on cellular watches when your phone is nearby, and fancy animated watch faces all add up. Simple, dark watch faces use less power on AMOLED screens.
Use low power or battery saver mode
Most watches have a mode that strips things back to the basics. Some, like the Apple Watch’s low power mode, still track workouts. It’s perfect for travel days or when you forgot to charge.
Keep software updated
Updates often include battery fixes. Update both the watch and the phone app.
Charge smarter
Lithium batteries last longest when they aren’t kept at 100 percent or drained to zero all the time. Many watches have optimized charging that holds the charge at around 80 percent until you need it. Leave that on. Keep the watch away from heat too, like a hot car dashboard.
When it’s time for a new watch
Batteries wear out. If your watch is a few years old and can’t get through a day even with these tweaks, the battery is probably the problem. Check whether the maker offers a battery service, or look at our list of smartwatches with the longest battery life for a replacement that’ll last much longer. Buying a new one? Our guide on spotting a real smartwatch deal helps.
FAQ
Why does my smartwatch battery drain so fast?
Usually the always-on display, high brightness, lots of notifications, GPS use and continuous health tracking. Turning those down helps most.
Does always-on display drain battery?
Yes. It’s often the single biggest battery drain on a smartwatch.
Should I charge my smartwatch every night?
Only if it needs it. Watches with optimized charging protect the battery, so overnight charging is fine, but you’ll miss sleep tracking that night.
Does GPS drain smartwatch battery?
Yes, a lot. Use indoor workout modes when you don’t need location.
How long should a smartwatch battery last?
It depends on the watch. Apple, Samsung and Google watches usually last about a day or two. Garmin and Amazfit watches often last a week or more.
