How to Check the Battery on an Apple Watch
Keeping an eye on your Apple Watch battery is something you'll want to do regularly — whether you're heading into a long workout, a flight, or just wondering if you need to charge before bed. Apple builds several ways to check battery level directly into watchOS, and each method suits a slightly different situation.
The Fastest Method: Swipe Up on Your Watch Face
The quickest way to check your battery is from the Control Center on your Apple Watch:
- Press your watch's side button (or raise your wrist to wake the display)
- Swipe up from the bottom of the watch face
- Look for the green battery icon with a percentage displayed
This gives you an at-a-glance reading without navigating through any menus. It works on every Apple Watch model running watchOS 7 or later.
Check Battery From the Watch Face Directly
If you want your battery percentage visible at all times without swiping, you can add a battery complication directly to your watch face:
- Press firmly (or long-press) on your watch face to enter edit mode
- Tap Customize
- Navigate to a complication slot and scroll to the Battery complication
- Confirm and exit
Not every watch face supports complications in the same positions, so the available slots vary depending on which face you're using. Faces like Modular and Infograph offer more complication slots than simpler faces like Meridian or Color.
Check Apple Watch Battery From Your iPhone 🔋
You don't need to be looking at your watch to know its charge level. Your iPhone can show it too:
Via the Batteries widget:
- On your iPhone, swipe right from the Home Screen to access the Today View
- Scroll down to find the Batteries widget (add it via the widget library if it's not there)
- This widget shows your iPhone, Apple Watch, and any other connected Apple devices simultaneously
Via Control Center:
- Swipe down from the top-right corner of your iPhone screen
- If you've added the Batteries item to your Control Center, it will appear here
The iPhone-based methods are especially useful when your watch is on the charger in another room or when you want a quick overview of all your Apple device battery levels at once.
Low Power Mode and Battery Alerts
Apple Watch will warn you automatically when battery gets low. You'll receive a notification at 10% battery remaining, at which point watchOS may prompt you to enable Low Power Mode.
Low Power Mode reduces background activity, dims the always-on display (if your model has one), and limits certain health-tracking features. It's designed to extend your remaining battery life when you can't charge right away — not as an everyday operating mode.
If your watch shuts down due to a dead battery, it will display a red lightning bolt icon when you place it on the charger, indicating it's charging but not yet at a usable level.
Checking Battery Health (Not Just Charge Level)
Battery level and battery health are two different things. Battery level tells you how much charge is currently available. Battery health tells you how much of the original capacity the battery still holds over its lifespan.
To check battery health on your Apple Watch:
- Open the Watch app on your iPhone
- Tap General
- Tap Usage
- Scroll to Battery Health
This shows a percentage of maximum capacity. A new battery reads at 100%. Apple generally considers battery health above 80% to be functioning normally. Below that threshold, you may notice shorter battery life compared to when the watch was new.
Battery health degradation is normal and depends on factors like charge frequency, temperature exposure, and how many charge cycles the battery has gone through.
Variables That Affect How Useful Battery Readings Are
The raw percentage you see isn't always the whole picture. Several factors shape what that number means in practice:
| Factor | How It Affects Battery Reading |
|---|---|
| Apple Watch model | Older models have smaller batteries and faster drain |
| Always-On Display | Enabled on Series 5 and later; increases power draw |
| Workout tracking | GPS and heart rate sensors drain battery faster |
| watchOS version | Software updates can improve or affect battery efficiency |
| Battery health % | Lower health = less real-world capacity at any given % |
| Cellular vs. GPS-only | Cellular models use more power when connected to LTE |
A Series 3 at 80% and a Series 9 at 80% will last very different amounts of time — even before accounting for battery health, active features, or usage patterns.
How Different Users Experience Battery Monitoring
Casual users who wear their watch during the day and charge it overnight rarely need to check battery levels deliberately — the watch handles it quietly. The complication on the watch face is usually enough.
Heavy users — those running long workouts, using GPS navigation, streaming music via LTE, or tracking sleep — check battery more actively because their usage drains the watch faster and the remaining runtime at any given percentage is shorter.
Users with older Apple Watch models or watches with degraded battery health often find that checking both current level and battery health together gives a more accurate sense of how much use is actually left in the day.
What that means for your own routine depends on how you wear and use your watch — how many features you keep active, which generation you have, and whether your battery health is still close to where it started. 🕐