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How do I charge my Fitbit device?

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We recommend plugging your charging cable into a USB port on your computer or other low-energy device. If necessary, you can use a UL-certified USB wall charger. Don't use a USB hub or battery pack to charge, and only use the charging cable that came with your device.

If you're looking for troubleshooting information, see Why isn't my battery charging?

Choose your device for more information.

Fitbit Ace, Fitbit Alta, and Fitbit Alta HR come equipped with a rechargeable lithium-polymer battery. Charging fully may take one to two hours.

Charging Instructions

To charge your tracker:

  1. Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.
  2. Clip the other 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. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display. The battery icon disappears after three seconds.
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While the tracker charges, you can tap it to check the battery level. A fully charged tracker shows a solid battery icon.

To see these steps in action, watch the following video (English only).

Monitoring battery level

For help deciding when to charge your tracker:

  • Your battery level is visible at any time on your Fitbit dashboard. To add a battery indicator that appears each time you flip through your stats on Alta, see How do I change the stats on my tracker?
  • When one day or less of battery life remains, you'll see a battery icon on the first screen while flipping through your stats.
  • When a critically-low warning appears, charge as soon as possible. 
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  • To receive a push notification or email when your battery is low, update your Notification settings on fitbit.com. For instructions see How do I update my Fitbit settings?

Fitbit Fitbit Ace 2, Fitbit Inspire, and Fitbit Inspire HR contain a rechargeable lithium-polymer battery.

Charging instructions

To charge your tracker:

  1. Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.
  2. Hold the other 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 on the back of your tracker.


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Charging fully takes up to 2 hours. While the tracker charges, press the button to check the battery level. A fully-charged tracker shows a solid battery icon with a smile.

Fitbit Blaze comes equipped with a rechargeable lithium-polymer battery. If your battery is low, charging fully may take one to two hours.

Charging Instructions

To charge Blaze:

  1. Plug the charging cable into the USB port on your computer.
  2. Remove the tracker from the wristband. To do so, push the screen gently so that it detaches from the frame.
  3. Put the tracker inside the charging cradle with the screen facing towards you and the four gold prongs aligned.
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  4. Close the cradle cover. A large battery icon appears temporarily on the display to let you know that charging has started.
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While your tracker is charging, a small battery icon in the top left corner while charging so you can check progress. A large green battery icon means the battery is full.

To see these steps in action, watch the following video (English only).

Monitoring battery level

The battery icon in the top left corner of the device's screen represents remaining battery life as of the last sync. You can also find this icon on the Fitbit dashboard.

If you want to receive a push notification or email when your battery is low, update your Notification settings on fitbit.com. For instructions see How do I update my Fitbit settings?

Fitbit Charge 2 and Fitbit Charge 3 contain a rechargeable lithium-polymer battery. Charging fully may take 1 to 2 hours. Fitbit Charge 2 chargers don’t work with Fitbit Charge 3 devices. 

Charging Instructions

To charge your tracker:

  1. Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger. 
  2. Clip the other 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.                                       
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  1. Make sure the button on your tracker is aligned with the button opening on the charging cable. You’ll know the connection is secure when the tracker vibrates and you see a battery icon on your tracker’s display. 

While the tracker charges, you can tap it to check the battery level. 
 

Fitbit Charge HR comes equipped with a rechargeable lithium-polymer battery. Charging fully may take 1 to 2 hours.

To charge Charge HR, plug the charging cable into the USB port on your computer and plug the other end into the port on the back of Charge HR. A battery icon on the display shows the charging progress.


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Fitbit Flex 2 comes equipped with a rechargeable battery. Charging fully takes about two to three hours.

Charging Instructions

To charge Flex 2:

  1. Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger.
  2. Press the pebble into the compartment on the charging cable The pins on the charging cable must align with the corresponding pins on the back of the pebble and lock securely in place. You’ll know the connection is secure when the pebble vibrates and you see the indicator lights blinking.
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While Flex 2 charges, each white light represents 25% of the maximum charge. When fully charged, you’ll see a green light and then all five lights will shine for a few seconds before turning off.

To see these steps in action, watch the following video (English only).

Monitoring battery level

For help deciding when to charge your tracker:

  • Check your battery level at any time on your Fitbit dashboard.
  • If your battery is low, when you check your goal progress, you'll see a flashing red light after you check your goal progress.
  • When your battery is critically low, you won't see your goal progress, only the flashing red light. Charge your tracker as soon as possible.
To receive a push notification or email when your battery is low, update your Notification settings on fitbit.com. For instructions see How do I update my Fitbit settings?

Charging Instructions

To charge Fitbit Ionic:

  1. Plug the charging cable into the USB port on your computer or a UL-certified USB wall charger. 
  2. Hold the other end of the charging cable near the port on the back of the watch until attaches magnetically.
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  3. Make sure the pins on the charging cable lock securely with the port. The connection is secure when the watch vibrates and the battery icon or percentage appears on the screen. 

Charging fully takes up to 2 hours. While the watch charges, you can tap the screen or press any button to check the battery level.

Fitbit Flyer comes equipped with a rechargeable lithium-ion battery. Charging fully may take up to 2 hours. Flyer cannot be used while charging.

Charging instructions

To charge Flyer:

  1. Plug the micro-USB 2.0 charging cable into Flyer's charging port, located underneath the cover.
  2. Plug the other end of the charging cable into the USB port on your computer or a UL-certified USB wall charger.
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When Flyer is charging, the LED changes color depending on the current charge level. Use the table below to determine the current battery level when Flyer is plugged into the charger.
LED colorBattery status
White lightFully charged
Yellow lightMedium
Red lightLow

Monitoring battery level

You can check Flyer's current battery level in any of the following ways:

  • 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 table below to determine the current battery level when Flyer is unplugged.
LED colorBattery status
White lightMedium to fully charged
Red lightLow
Flashing red lightVery low

Charging Instructions

To charge Fitbit Versa:

  1. Plug the charging cradle into the USB port on your computer or a UL-certified USB wall charger
  2. Pinch the clip and place Versa in the charging cradle. The pins on the charging cradle must align with the gold contacts on the back of the watch. The percent charged appears on screen.

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Charging fully takes up to 2 hours. While the watch charges, tap the screen to check the battery level. Tap the screen twice to use Versa while it charges.

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Last updated: March 23, 2019
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