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Can I improve my tracker's battery life?

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The length of time your tracker can operate on a full charge depends on how frequently you use it and various settings. This article provides battery life estimates and tips for turning off features you don't need when you want to prioritize battery life. To make sure you're charging your tracker correctly, see How do I charge my tracker?

Your Fitbit Alta battery can last up to 5 days between charges. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Alta to see your settings. All-Day Sync is near the bottom. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • Turn off Quick View. Since this feature causes the screen to light up when you turn your wrist towards you, turning it off can prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Alta and scroll down.
  • Don't receive reminders to move every hour. To get fewer reminders, make sure you walk 250 steps each hour, change the number of hours you want your stationary time monitored, or turn off the feature on days you don't need it.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

Your Fitbit Blaze battery can last up to 5 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • Make sure you're charging Blaze fully each time. When you think Blaze is done charging, take it out of the charging cradle and then put it back in briefly. If you see a large, blue battery icon you'll know the battery is full. For best practices, see How do I charge my tracker?
  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Blaze to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you don't need heart rate data, change the Heart Rate setting to Off. When you turn it back on, use Auto. 
  • Turn call, text, or calendar notifications off if you know you're going to receive many hundreds of notifications. A large volume reduces battery life.
  • Charge your tracker more often if you use music control frequently.
  • Charge your tracker more often if you do FitStar workouts frequently.
  • Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Blaze and then scroll down.
  • Don't receive reminders to move every hour. To get fewer reminders, make sure you walk 250 steps each hour, change the number of hours you want your stationary time monitored, or turn off the feature on days you don't need it.
  • Don't use the maximum Brightness setting.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?
  • Shut down Blaze when it's not in use.
If you shut down Blaze, make sure it syncs as soon as you turn it back on. The time shown on the clock will be incorrect until you sync.

Your Fitbit Charge battery can last up to 7 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Charge to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Charge and scroll down.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

Your Fitbit Charge 2 battery can last up to 5 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Charge 2 to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you don't need heart rate data, change the Heart Rate setting to Off. When you turn it back on, use Auto. 
  • Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Charge 2 and scroll down.
  • Don't receive reminders to move every hour. To get fewer reminders, make sure you walk 250 steps each hour, change the number of hours you want your stationary time monitored, or turn off the feature on days you don't need it.
  • Turn call, text, or calendar notifications off if you know you're going to receive many hundreds of notifications. A large volume reduces battery life. 
  • Use guided breathing sessions less frequently. Multiple sessions per day may reduce battery life. For more information see What should I know about the Relax feature?
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

Your Fitbit Charge HR battery can last up to 5 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Charge HR to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you don't need heart rate data, change the Heart Rate setting to Off. When you turn it back on, use Auto. 
  • Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Charge HR and scroll down.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

The battery in your original Fitbit Flex can last up to 5 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Flex to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage.
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

The battery in your Fitbit Flex 2 can last up to 5 days. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Flex 2 to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • When you're not at the pool, make sure the swim detection feature is off. For more information see How do I track my swims with Flex 2?
  • Turn call, text, or calendar notifications off if you know you're going to receive many hundreds of notifications. A large volume reduces battery life. 
  • Don't receive reminders to move every hour. To get fewer reminders, make sure you walk 250 steps each hour, change the number of hours you want your stationary time monitored, or turn off the feature on days you don't need it.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

Your Fitbit One battery can last up to two weeks. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap One to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you have many silent alarms set, consider deleting some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

If you aren’t tracking runs or exercises that use GPS, your fully charged Fitbit Surge should last up to 7 days. A fully charged Surge can track up to 10 hours of activities that use GPS. Because battery life is affected by use and other settings, actual results may vary.

Consider these tips when you want to conserve battery life:

  • Shut down your Surge when not in use.
  • If you use the Fitbit app, make sure All-Day Sync is turned off. All-Day Sync increases battery drain on both your tracker and mobile device. To find the setting, open the app and tap Account. At the top of the screen tap Surge to see your settings, then scroll down. 
  • (Android only) Turn off the Always Connected setting. Similar to All-Day Sync, it can reduce battery life.
  • If you don't need heart rate data, change the Heart Rate setting to Off. When you turn it back on, use Auto. 
  • Charge your tracker more often if you use music control frequently.
  • If you have many silent alarms set, remove some. Each alarm you add up to the maximum of 8 reduces battery life by a small percentage. 
  • Turn off Quick View. Since it causes the screen to light up when you turn your wrist towards you, turning this setting off may prolong battery life. To find the setting, open the app and tap Account. At the top of the screen tap Surge and scroll down.​
  • Don't charge your tracker in extreme head or cold. For best practices, see How do I charge my tracker?

Your Fitbit Zip battery should last up to 6 months before needing a replacement. Frequently tapping your tracker to check your statistics may reduce battery life.

When the battery drops below 25%, a low battery indicator will show on your tracker display and dashboard. A flashing battery icon indicates that your tracker is very close to being completely out of battery life. Data could be lost if your tracker is not synced before replacing the battery.

To replace your Zip's battery:

  1. Buy a 3V coin battery, CR2025. It can be found wherever batteries are sold.
    CR2025 Battery
  2. Use the battery door tool to open and close the battery door compartment on the back of the your tracker. Zip has a harmless, polysilicone grease on the battery door that lubricates the rubber gasket to ensure a water-tight seal.
    Fitbit Zip Battery Tool
  3. Your old battery can be recycled.
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Last updated: September 10, 2016
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