Why isn't my Fitbit device's battery charging?

If your battery stopped charging, try the solutions below.

Problem

Solution

The pins on the device or charging

cable are dirty.

Dust and debris can accumulate over time. Clean the charging

contacts on the back of your device and the pins on your

charging cable.

The USB port or outlet is faulty.

Try a different USB port or a UL-certified wall charger.

The device isn’t connected securely to

the charging cable.

Check the alignment and try reconnecting your device to the

charging cable.

The device isn't working as expected.

Restart your device.

The device is wet.

Thoroughly dry your device before charging it.

The error "insufficient power source"

appears on your device's screen.

Remove other devices plugged in to your power source, or

plug your device in to another source.

Your device’s battery was depleted to

0%, and it doesn’t appear to be

charging

Leave your device plugged in to the charging cable for at least

30 minutes.

You haven't used the device for several

months, and it won't turn on.

Leave your device plugged in to the charging cable for at least

30 minutes.

How do I charge my Fitbit device?

Plug the charging cable into a USB port on your computer, a UL-certified USB wall charger, or

another low-energy device. Attach the other end of the cable to your Fitbit device. Charging your

device to 100% may take 1-2 hours.

How do I attach the charging cable to my Fitbit device?

Fitbit devices come equipped with a rechargeable lithium-ion battery.

 Ace & Alta series

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.

 Ace 2 & Inspire series

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.

 Blaze

1. Remove the device from the wristband by gently pushing the screen until it

detaches from the frame.

2. Put the device inside the charging cradle with the screen facing you and the 4 gold

prongs aligned.

3. 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.

 Charge 2 & Charge 3

1. 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.

2. Make sure the button on your tracker is aligned with the button opening on the

charging cable. The connection is secure when the tracker vibrates and a battery

icon appears on the screen.

 Flex 2

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.

 Flyer

Plug the micro-USB 2.0 charging cable into Flyer's charging port, located underneath the

cover. Note: Flyer can’t be used while charging.

 Ionic

1. Hold the end of the charging cable near the port on the back of the watch until it

attaches magnetically.

2. Make sure the pins on the charging cable lock securely with the port. The percent

charged appears on the screen.

 Versa

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 the screen.

How do I know when my device is charged to 100%?

While your watch or tracker charges, press the button or tap to see the battery level.

 Ace & Alta series

A solid battery icon appears when your device is charged to 100%.

 Ace 2 & Inspire series

A solid battery icon with a smile appears when your device is charged to 100%.

 Blaze

A green battery icon appears when your device is charged to 100%.

 Charge 2

A solid battery icon appears when your device is charged to 100%

 Charge 3

A solid battery icon with a smile appears when your device is charged to 100%.

 Flex 2

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.

 Flyer

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

 Ionic & Versa

Tap the screen, and “100%” briefly appears. Tap twice to use your watch while it’s

charging.

How do I check the battery level on my Fitbit device?

Swipe down on the Today tab of the Fitbit app to see your battery level in the top left

corner, or see your battery level on most devices.

 Ace & Alta series

o When 1 day or less of battery life remains, a battery icon appears on your device

as you tap through your stats.

o When a critically-low battery warning appears, charge your device as soon as

possible.

 Ace 2 & Inspire series

Press and hold the button on your device to see the battery level on the quick settings

screen.

 Blaze

The battery icon in the top left of your device’s screen shows the remaining battery life as

of the last sync.

 Charge 2

See your battery level on the battery screen on your tracker. To see this screen, turn on

the battery menu item in the Fitbit app.

 Charge 3

Swipe up on your clock face. The battery icon is in the top left of the screen.

 Flex 2

o If your device’s battery is low, a flashing red light appears after you check your

goal progress.

o When your device’s battery is critically low, a flashing red light appears instead

of your goal progress.

 Flyer

o When turning Flyer on or off, check the battery-level indicator light to view the

current battery level.

o When turning Flyer on or off, listen for the audio notification telling you the

current battery level.

o While Flyer is on, briefly press the Power button to see the battery indicator LED

and hear an audio notification.

o Check Flyer's battery level on any device it's connected to, if your device supports

this feature.

o 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

 Ionic & Versa

Swipe up to open Fitbit Today. The battery level icon is in the top left of the screen. Hold

the end of the charging cable near the port on the back of the watch until it attaches

magnetically.

Can I extend my Fitbit device's battery life?

Battery life is the amount of time your Fitbit device runs after it’s charged to 100%. To

maximize battery life, turn off or reduce your use of certain features.

What is the estimated battery life for my Fitbit device?

Because battery life is affected by use and other settings, actual results may vary.

Device Name

Battery Life

Fitbit Versa series

4+ days

Fitbit Ace series

Fitbit Alta

Fitbit Blaze

Fitbit Charge 2

Fitbit Flex 2

Fitbit Ionic*

Fitbit Inspire series

Up to 5 days

Fitbit Alta HR

Fitbit Charge 3

Up to 7 days

Fitbit One

Up to 2 weeks

Fitbit Zip

Up to 6 months

Fitbit Flyer

6-hour playtime

Note that after several hundred charge cycles, your device may need to be charged more often.