Google publishes the estimated battery life for each device and the settings that cost it. The Sense 2 and Versa 4 are rated 6 or more days, the Charge 5 and Charge 6 up to 7 days, the Inspire 3 up to 10 days and the Luxe up to 5 days. With Always On display, the Charge 5, Charge 6, Inspire 3, Sense 2 and Versa 4 drop to up to 3 days and the Luxe to up to 2.
With built-in GPS running continuously, the Charge 5 and 6 last up to 5 hours and the Sense 2 and Versa 4 up to 12. Tips: turn off Always On, dim the screen or use auto brightness, shorten the screen timeout, remove SpO2 tracking if you do not need it, use a simpler clock face because animated ones cost more, and turn off notifications you do not need, including alarms and reminders to move. Charging to 100 percent can take up to 2 hours, and after several hundred cycles a device needs charging more often.
Differential
Likely causes of “Fitbit trackers and smartwatches battery drains too quickly”, and how to tell them apart
- 1
Always On display
What separates it The battery lasts about 3 days instead of 6 because the Always On display is on
How to confirm Turn Always On off, in the display settings, and watch the battery
- 2
Built-in GPS workouts
What separates it A run cuts the battery because of built in GPS workouts
How to confirm Charge above 80 percent before GPS and use phone GPS when possible
- 3
SpO2 tracking or animated clock faces
What separates it There is a steady overnight or daytime drain because of SpO2 tracking or animated clock faces
How to confirm Remove SpO2 tracking or use a simpler face
- 4
Many notifications
What separates it There are frequent screen wakes because of many notifications
How to confirm Turn off notifications you do not need, and watch the battery
- 5
A worn battery after hundreds of cycles
What separates it The life falls even with Always On off because of a worn battery after hundreds of cycles
How to confirm Get the battery tested, by contacting Fitbit support with the model
Before you touch a setting
Record this first — changing settings destroys the evidence
- The model, serial number and firmware version
- Battery percentage at the start and end of a day and what you did
- Whether Always On, SpO2 tracking and GPS are on
- How old the device is and how often it is charged
Try in this order
0 of 7 completedCheck the rated life
ReversibleCheck the rated life, by comparing your model with Google's table of battery life, and then test again to see whether it helped.
Turn Always On off, in the display settings, and watch the battery
ReversibleTurn Always On off, by opening the device's display settings and turning Always On off.
Trim the display
ReversibleTrim the display, by dimming the screen or using auto brightness and shortening the timeout.
Remove SpO2 tracking
ReversibleRemove SpO2 tracking from the device, if you do not need it for sleep or health.
Use a simple clock face
ReversibleUse a simple clock face, and avoid animated faces that keep the screen busy, and then test again to see whether it helped.
Trim notifications
ReversibleTrim notifications, by turning off alerts, alarms and move reminders that you do not need.
Update
ReversibleUpdate, by keeping the Google Health app, the phone and the device firmware updated, and then test again to see whether it helped.
Model-specific
What is true of this model and not of its siblings
- Models this page covers
- Charge 5 (FB421), Charge 6 (G3MP5), Inspire 3 (FB424), Luxe (FB422), Sense 2 (FB521), Versa 4 (FB523) and Fitbit Ace LTE (G4SKY). Google's Health Help Center covers all of them except the Ace LTE, which has its own Fitbit Ace LTE Help at support.google.com/fitbitacelte.
- Rated battery by model
- Google's table: Sense 2 and Versa 4 6+ days; Charge 5 and Charge 6 up to 7 days; Inspire 3 up to 10 days; Luxe up to 5 days; with Always On, up to 3 days on the Charge 5, Charge 6, Inspire 3, Sense 2 and Versa 4 and up to 2 on the Luxe.
- Continuous built-in GPS
- Up to 5 hours on the Charge 5 and Charge 6 and up to 12 hours on the Sense 2 and Versa 4, per Google's article.
- Fitbit Ace LTE
- The Ace LTE is a children's watch managed from the Fitbit Ace app with a separate help site. It restarts with a long press of the top button and Restart, charges only in one orientation on a USB-C fast charging cable with four contact pins, and needs an Ace Pass data plan for LTE, calls and messages; Google's specifications list 16 or more hours of battery, Wi-Fi 2.4 GHz, Bluetooth 5.0 and water resistance to 50 m.
- Model number instead of a part number
- No part number is involved for you. Fitbit identifies a device by its model number, for example FB523 for a Versa 4, and its serial number, shown in the Google Health app under your device and on the back of the device.
- Tools and supplies
- The charging cable that came with the device, a cotton swab, rubbing alcohol and a pencil eraser for the contacts, a lint-free cloth, a soft toothbrush, your phone with the Google Health app installed, and a pen and paper to note the model and serial number. No screwdriver is needed and the device should not be opened.
- Repair cost
- Cleaning, restarting and re-syncing cost nothing. Per Alibaba's Fitbit battery guide, a battery costs about $8 to $15 with tools if you do it yourself, a mail-in repair service charges about $45 to $75, and replacing a Charge 6 costs $99 to $129. Fitbit's newer models use adhesive that makes the repair harder than on older ones.
- Other models this page answers
- These steps also fit models Charge 5, Sense 2, Versa 4, Inspire 3, Luxe, Ace LTE.
Stop boundary
When this stops being a self-service repair
- !If the device dies within a day with Always On off and a simple face, contact Fitbit support
- !If the case is hot or swollen, stop using it and contact Google
- !If it drains only during GPS workouts, that is expected: check the GPS figures
Evidence ledger
Sources behind this answer
Where the manufacturer's article stops. Repair figures come from Alibaba's Fitbit battery guide: $8 to $15 for a battery and tools to do it yourself, $45 to $75 at a mail-in repair service and $99 to $129 to replace a Charge 6; Google can revise its own service terms.
Estimated life by model, always-on and GPS figures and the tips list.
Charging time.
Built-in GPS drains the battery faster.
16 hours, Battery saver and settings.
The Fitbit brand and its devices.
Exact questions
Common questions
How long should each Fitbit last?+
Google lists Sense 2 and Versa 4 at 6 or more days, Charge 5 and 6 up to 7, Inspire 3 up to 10 and Luxe up to 5.
What does Always On cost?+
Google says the Charge 5, Charge 6, Inspire 3, Sense 2 and Versa 4 fall to up to 3 days and the Luxe to up to 2.
How long does built-in GPS last?+
Up to 5 hours on a Charge 5 or 6 and up to 12 hours on a Sense 2 or Versa 4, per Google.
Do animated clock faces matter?+
Google says animated clock faces may require more frequent charging.
Does SpO2 tracking drain the battery?+
Google lists tracking SpO2 as a feature that may require more frequent charging.
How long does the Ace LTE last?+
Google says more than 16 hours in typical use.
Does battery health decline?+
Google says after several hundred charge cycles a device may need charging more often.