Where to find your battery percentage on the watch face
The fastest way to see your Apple Watch battery is to swipe up from the bottom of the watch screen. This opens Control Center, and your battery percentage appears in the top right corner as a number with a small battery icon next to it. The icon fills with color as your battery drains — a full green icon means 100%, and it turns red when you drop below 20%.
If you want to see the battery without opening Control Center, add the battery complication to your watch face. A complication is a small widget that shows information directly on your home screen. Open the Watch app on your iPhone, go to Clock, select your current watch face, tap Edit, then add the Battery complication to any available slot. Now you can glance at your wrist and see the percentage without swiping.
Key Takeaways
- Swipe up from the bottom of your watch screen to see your exact battery percentage in Control Center.
- Add a battery complication to your watch face to check the percentage without opening Control Center.
- The battery icon turns red when you fall below 20%, and Low Power Mode extends your battery life by about one day.
- Check battery health in the Watch app on your iPhone under Settings > General > About to see if your battery is degrading.
- Restarting your watch, turning off background app refresh, and disabling always-on display all extend battery life between charges.
Understanding the battery icon colors and what they mean
The battery icon in Control Center changes color to signal how much charge you have left. When the icon is green, you have more than 20% battery remaining and your watch will run normally. Once you drop below 20%, the icon turns red and a Low Power Mode notification appears on your screen. At this point, your watch is warning you that you should charge soon.
If your battery reaches 10%, your watch automatically switches to Low Power Mode without asking. In this mode, the always-on display turns off, background app refresh stops, and some features like the always-listening Siri pause. Your watch will still tell time, show notifications, and make calls, but it uses far less power. Low Power Mode can extend your battery life by roughly one full day, though the exact amount depends on how much you use the watch.
How to check your battery health in the Watch app
Your Apple Watch battery degrades over time, just like any rechargeable battery. To see how much capacity your battery has lost, open the Watch app on your iPhone, tap Settings, then General, then About. Scroll down until you see "Battery Health" listed. This shows the maximum capacity your battery can hold right now compared to when it was new.
A new Apple Watch battery shows 100% capacity. After a year or two of regular charging, you might see 80% or 85%. This is normal wear and does not mean your battery is failing. However, if your battery health drops below 80% and your watch is still under warranty, you can contact Apple Support about a battery replacement. Most Apple Watch batteries last three to four years before they drop significantly below 80%.
Why your battery drains faster than expected
If your watch is losing charge much faster than it used to, several settings might be the culprit. Background app refresh is a common drain — apps can check for updates and read data even when you are not using them. Turn this off by opening the Watch app on your iPhone, going to General, then Background App Refresh, and toggling off the apps you do not need running in the background.
The always-on display is another major battery consumer. If you have an Apple Watch Series 5 or newer, this feature keeps the time visible even when you lower your wrist. Turning it off extends battery life significantly. Go to Watch app > Display & Brightness and toggle off "Always On." You can also check whether you have location services, Wi-Fi, or Bluetooth enabled when you do not need them — these drain battery faster than cellular-only mode.
Steps to restart your watch if the battery seems stuck
Sometimes your watch displays an incorrect battery percentage, or the battery drains unusually fast after an update. A restart often fixes this. Press and hold the side button (the one below the Digital Crown) until you see the power-off slider appear on your screen. This takes about 3 seconds. Drag the slider to the right to turn off your watch.
Wait 10 seconds, then press and hold the side button again until the Apple logo appears. Your watch will restart and recalibrate its battery meter. This usually takes 30 seconds to a minute. Once your watch boots back up, check Control Center again to see if the battery percentage is now accurate. If the problem persists, try charging your watch to 100% and then letting it drain all the way to zero before charging again — this recalibrates the battery sensor.
Charging habits that protect your battery long-term
How you charge your watch affects how fast the battery degrades. Lithium batteries like the one in your Apple Watch last longer when you avoid letting them fully drain regularly. Instead of waiting until your watch shuts off, charge it when you reach 20% or lower. Similarly, you do not need to charge to 100% every time — stopping at 80% occasionally reduces wear, though this is less critical than avoiding deep drains.
Use the charger that came with your watch or an Apple-certified replacement. Third-party chargers can deliver inconsistent power and damage the battery faster. Avoid leaving your watch on the charger for days at a time once it reaches 100% — unplug it after it finishes charging. Heat also degrades batteries, so do not leave your watch in direct sunlight or in a hot car for extended periods.
When to contact Apple about battery problems
If your battery health has dropped below 80% and your watch is within the one-year limited warranty, Apple will replace the battery at no cost. If your watch is out of warranty, battery replacement costs between $70 and $100 depending on your model. Contact Apple Support through the Apple Support app on your iPhone, or visit an Apple Store to arrange the replacement.
If your watch is draining battery in minutes rather than hours, or if it shuts off even though the battery shows 30% or higher, this signals a hardware problem beyond normal wear. In these cases, Apple may replace the entire watch under warranty or offer a repair estimate if you are out of warranty. Do not attempt to replace the battery yourself — Apple Watch batteries are glued in place and require specialized tools.
Frequently Asked Questions
How long should an Apple Watch battery last on a single charge?
Most Apple Watch models last 18 hours on a single charge under normal use. Series 9 and Ultra models can stretch to 36 hours in low-power mode. Actual battery life depends on how much you use features like GPS, cellular, and the always-on display. Heavy use can drain the battery in 12 hours or less.
Does Low Power Mode slow down my watch?
Low Power Mode disables some features like always-on display and background app refresh, but it does not make your watch slower when you are actively using it. Apps open at the same speed, and notifications arrive normally. The trade-off is that some apps may not update data in the background until you open them.
Can I see battery percentage on older Apple Watch models?
Yes. All Apple Watch models since the original Series 1 can display battery percentage in Control Center by swiping up from the bottom. Older models may not show the battery complication on the watch face, but you can always access the percentage through Control Center or the Watch app on your iPhone.
What does it mean if my battery health says 0%?
A 0% reading usually means the battery health data failed to load or your watch needs a restart. Restart your watch by holding the side button until the power slider appears, then turn it back on. If the reading still shows 0% after restart, contact Apple Support — this can indicate a hardware issue.
Is it bad to charge my Apple Watch overnight?
Charging overnight occasionally is not harmful, but leaving your watch on the charger for 8+ hours every night can slightly reduce battery lifespan over years. Modern Apple Watches have safeguards that stop charging at 100%, but unplugging after the watch finishes charging is the best practice for long-term battery health.