Your Fitbit device comes with a rechargeable lithium-ion battery and a USB charging cable unique to your device’s model.
To charge your device:
- Plug the charging cable into:
- A USB port on your computer
- A safety-certified USB wall charger
- Another safety-certified, low-energy power source
- Attach the other end of the cable to your device.
Tip: Charging your device to 100% may take one to two hours.
For troubleshooting steps, go to Why isn't my Fitbit device's battery charging?
Expand all Collapse all- Hold the end of the charging cable near the back of Google Fitbit Air until it attaches magnetically.
- The connection is secure when the tracker vibrates and the status light on the side of the tracker lights up.
When Google Fitbit Air has completed charging, the status light will show a solid white light.
Hold the charging cable near the port on the back of the tracker until it attaches magnetically. Make sure the pins on the charging cable align with the port on the back of your tracker. The charge percentage appears on the screen.
Tip: Charge 5, Charge 6, and Luxe use the same charging cable.
- Align the pins on the end of the charging cable with the gold contacts on the back of your device.
- Gently press your device into the charger until it snaps into place.
To remove your device from the charging cable:
- Hold the device and slide your thumbnail between the charger and the back of the tracker on one of the corners.
- Gently press down on the charger until it separates from your device.
Clip the end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port. The connection is secure when the tracker vibrates and a battery icon appears on the screen.
- Align the pins on the end of the charging cable with the gold contacts on the back of your device.
- Gently press your device into the charger until it snaps into place.
To remove your device from the charging cable:
- Hold the device and slide your thumbnail between the charger and the back of the tracker on one of the corners.
- Gently press down on the charger until it separates from your device.
Clip the end of the charging cable to the port on the back of the tracker. The pins on the charging cable must lock securely with the port. The connection is secure when the tracker vibrates and a battery icon appears on the screen.
- Remove the device from the band by gently pushing the screen until it detaches from the frame.
- Put the device inside the charging cradle with the screen facing you and the 4 gold prongs aligned.
- Close the cradle cover. A battery icon appears for a few seconds.
While your device charges, a battery icon in the top left of the screen shows the progress.
Important: The Charge 3 charging cable doesn’t work with Charge 4. Use the charging cable that came with your Fitbit device. The Charge 4 charging cable has a gray connector on the base of the clip.
Clip the end of the charging cable to the port on the back of your tracker. The pins on the charging clip must lock securely with the gold contacts on the back of the tracker. Your tracker vibrates, and a battery icon appears on the screen.
Hold the charging cable near the port on the back of the tracker until it attaches magnetically. Make sure the pins on the charging cable align with the port on the back of your tracker. The charge percentage appears on the screen.
Tip: Charge 5, Charge 6, and Luxe use the same charging cable.
Press the tracker into the compartment on the charging cable. The pins on the charging cable must lock securely with the corresponding pins on the back of the device. The connection is secure when the tracker vibrates and the indicator lights blink.
Plug the micro-USB 2.0 charging cable into Flyer's charging port, located underneath the cover.
Tip: Flyer can’t be used while charging.
Hold the end of the charging cable near the port on the back of the tracker until it attaches magnetically. Make sure the pins on the charging cable align with the port. The connection is secure when the tracker vibrates and a battery icon appears on the screen.
- Align the pins on the end of the charging cable with the gold contacts on the back of your device.
- Gently press your device into the charger until it snaps into place.
To remove your device from the charging cable:
- Hold the device and slide your thumbnail between the charger and the back of the tracker on one of the corners.
- Gently press down on the charger until it separates from your device.
Hold the end of the charging cable near the port on the back of the watch until it attaches magnetically. The charge percentage appears on screen.
The status light shows a solid white light when your device is charged to 100%.
Tip: Google Fitbit Air charges from 0 to 100% in about 90 minutes.
Press the button to turn your tracker on while it charges. Swipe right on the battery screen to use your tracker. A fully charged tracker shows a solid battery icon.
Double-tap the screen to turn your tracker on while it charges. Swipe right on the battery screen to use your tracker. A fully charged tracker shows a solid battery icon.
From the clock face, swipe down. The current battery level appears at the bottom of the screen.
A solid battery icon appears when your device is charged to 100%.
A solid battery icon with a smile appears when your device is charged to 100%.
A solid battery icon appears when your device is charged to 100%.
A green battery icon appears when your device is charged to 100%.
A solid battery icon appears when your device is charged to 100%.
A solid battery icon with a smile appears when your device is charged to 100%.
Double-tap the screen to turn your tracker on while it charges. Swipe right on the battery screen to use your tracker. A fully charged tracker shows a solid battery icon.
While Flex 2 charges, each white light represents 25% of the maximum charge. When the tracker is charged to 100%, a green light appears, and then all 5 lights shine for a few seconds before turning off.
While Flyer charges, the LED changes color depending on the current charge level. Use the following table to determine the current battery level when Flyer is plugged into the charger:
| LED color | Battery status |
| White light | Fully charged |
| Yellow light | Medium |
| Red light | Low |
A solid battery icon with a smile appears when your device is charged to 100%.
While the watch charges, tap the screen twice to check the battery level. Tap again to use it while it charges.
While the watch charges, tap the screen twice or press the button to turn the screen on. The battery level appears for a couple seconds, then disappears so you can use your watch while it charges.
Open the Google Health app . On the Today tab
. The battery level appears to the right of your device. You can also check the battery level on most devices.
Double-tap your device to activate the status light. The color shows your estimated battery level..
- White light: More than 20%
- Red light: Less than 20%
When the battery is low, the device displays a red light and vibrates.
- Slowly-blinking red light: Your device has less than 20% battery left.
- Solid red light: Your device has run out of battery.
- If your device is completely out of battery, it can also show no light at all.
Tip: Google Fitbit Air charges from 0 to 100% in about 90 minutes.
Swipe up from the clock face. The battery level is in the top left.
From the clock face, swipe down. The current battery level appears at the bottom of the screen.
- When one day or less of battery life remains, a battery icon appears on your device as you tap through your stats.
- When a critically low battery warning appears, charge your device as soon as possible.
Press and hold the button on your device to see the battery level on the quick settings screen.
- When one day or less of battery life remains, a battery icon appears on your device as you tap through your stats.
- When a critically low battery warning appears, charge your device as soon as possible.
The battery icon in the top left of your device’s screen shows the remaining battery life as of the last sync.
Check your battery level on the battery screen on your tracker. To find this screen, turn on the battery menu item in the Google Health app.
Swipe up from the clock face. The battery level is in the top left.
- If your device’s battery is low, a flashing red light appears after you check your goal progress.
- When your device’s battery is critically low, a flashing red light appears instead of your goal progress.
- When turning Flyer on or off, check the battery-level indicator light to view the current battery level.
- When turning Flyer on or off, listen for the audio notification telling you the current battery level.
- While Flyer is on, briefly press the Power button to see the battery indicator LED and hear an audio notification.
- Check Flyer's battery level on any device it's connected to, if your device supports this feature.
- When Flyer's battery level falls to Low or Very Low, the LED changes to red and an audio notification plays.
Use the following table to determine the current battery level when Flyer is unplugged:
| LED color | Battery status |
| White light | Medium to fully charged |
| Red light | Low |
| Flashing red light | Very low |
Press and hold the button on your device to see the battery level on the quick settings screen.
Swipe down from the top of the screen. The battery level icon is in the top left.
From the clock face, swipe right. The battery level icon is at the top of the screen. When your device's battery is critically low, a low battery icon appears for 3 seconds at the top of the clock face when you turn on the screen.
- Make sure there are no metal objects, such as jewelry, nearby as your device charges. After your device is charged, unplug the charging cable.
- Get a notification or email when your device’s battery is low. For more information, go to How do I choose which alerts Fitbit sends me?
- Extend your device’s battery life by reducing your use of certain features. For more information, go to Can I extend my Fitbit device's battery life?
- Keep the charging contacts on the back your device and the pins on the charging cable clean and free of debris. For more information, go to How do I clean my Fitbit device?
- For best results, don’t leave your device plugged in on the charger longer than overnight.
1Charging speed based on use of in-box USB-C®at 22 to 30 degrees C. Actual results may be slower Based on testing, charging speed with fully drained device batteries. Charging testing conducted in 2025 on pre-production hardware and software using default settings with the device powered on. Charging speed depends upon many factors including battery age and ambient temperature. Testing conducted in 2025 on pre-production hardware and software using default settings with the device powered on. Charging speed depends upon many factors including battery age and ambient temperature.