Fix Your Stuff

Repair Guides

Learn how to fix just about anything with our step-by-step guides.

App

Your pocket repair helper.

FixBot

The friendly AI repair assistant.

Repairability

Learn why fixable products make sense.

Teardowns

Get a sneak peek inside the latest gadgets.
Community

Answers Forum

Share solutions and get help from a friend.

Find Your Community

Find teams, events, and fellow fixers.

Help Out

Help make repair knowledge free and accessible for everyone.

Right to Repair

Learn about the Right to Repair movement and how to be an advocate.
Store

Featured

Quality parts and tools backed by our lifetime guarantee.

Tools

Shop our wide selection of precision tools.

Parts

Shop parts backed by our quality guarantee.

iPhone Batteries

Batteries tested and guaranteed plus a kit with everything you need.

Free Shipping on Domestic Orders $75+

Charge 3 Battery Replacement

Introduction

This repair helps fix bad battery life which could cause the device to reboot at random

What you need

    1. Charge 3 Battery Replacement, Battery: step 1, image 1 of 3 Charge 3 Battery Replacement, Battery: step 1, image 2 of 3 Charge 3 Battery Replacement, Battery: step 1, image 3 of 3

      • It is recommended to let the battery discharge before starting. It's a precaution to prevent the battery from lighting on fire if punctured.

      • Remove both T2 screws

      • Slide off the plastic piece by lifting out and then up

      • Slide plastic and spring assembly off the rail

      • Watch out for the spring on in the band release

      Edit
      Ask FixBot

      Add Comment

    2. Charge 3 Battery Replacement: step 2, image 1 of 3 Charge 3 Battery Replacement: step 2, image 2 of 3 Charge 3 Battery Replacement: step 2, image 3 of 3

      • Heat the glass screen with a blowdryer to soften the adhesives

      • Start the next step on the opposite side of the Fitbit wording below the glass. This is due to the display cables being located there

      • Insert a razor blade between the glass and the body

      • Keep going around the rim of the display until loose

      Edit
      Ask FixBot

      Add Comment

    3. Charge 3 Battery Replacement: step 3, image 1 of 1

      • This is how close those cables get to the edge underneath the Fitbit wording so be careful

      Edit
      Ask FixBot

      Add Comment

    5. Charge 3 Battery Replacement: step 4, image 1 of 3 Charge 3 Battery Replacement: step 4, image 2 of 3 Charge 3 Battery Replacement: step 4, image 3 of 3

      • Lift the display then battery up gently

      • The battery is attached with a little bit of adhesive so lift it gently

      • Remove battery connector

      Edit
      Ask FixBot

      Add Comment

    6. Charge 3 Battery Replacement: step 5, image 1 of 2 Charge 3 Battery Replacement: step 5, image 2 of 2

      • Connect new battery connector

      • Peel the plastic layer off the adhesive backing

      • Put the battery back in place

      Edit
      Ask FixBot

      Add Comment

    7. Charge 3 Battery Replacement: step 6, image 1 of 1

      • Add a thin layer of E-6000 glue around the casing

      • Make sure to cover the entire surface that makes contact with the screen to keep the device waterproof

      Edit
      Ask FixBot

      Add Comment

    8. Charge 3 Battery Replacement: step 7, image 1 of 2 Charge 3 Battery Replacement: step 7, image 2 of 2

      • Flip down the screen and remove any extra glue that squeezes out

      • Take a rubber band and wrap it around the device, this will ensure the display stays in place until the glue cures

      • With the rubber bands on go to step 1 and reverse the steps to reinstall the band release

      • The glue will take between 24 and 72 hours to fully cure

      Edit
      Ask FixBot

      Add Comment

      • When the glue is fully cured remove the rubber bands

      • After all is done you will need to calibrate the battery to do this charge it to 100% then leave it charging for an extra 2 hours use the device until it dies of low power and finally charge it to 100% and it should be good to go

      • And voila - you now have a repaired Fitbit Charge 3

      Edit
      Ask FixBot

      Add Comment

Conclusion

Thanks to ShellingRook27's Original Dissasembly I Was Able to Make this Guide And Bring a new life to my old device.

Cancel: I did not complete this guide.

2 other people completed this guide.

Author

with 2 other contributors

Supper Simon

Member since: 03/18/23

464 Reputation

2 Guides authored

Badges: 8

+5 more badges

4 Guide Comments

Fantastic - thanks for sharing!

K80 - Reply Share

No problem anything to make the world a more fixable place

Supper Simon - Reply Share

Hi! My fitbit charge 4 is taken apart now but now that I've lifted the battery what I see is completely different from what's shown in the photo. If I haven't already destroyed my Fitbit, how about a version for the Fitbit 4? Or a video would be even better. In the meantime, I'm stuck. I bought the battery from you.

Regi

Regina Merwin - Reply Share

I don't have a charge 4 so I'm only going off the internet here, but you can follow some of the steps here to replace the battery https://www.youtube.com/watch?v=2C1DiVXj... and if you need any further guidance please let me know

Supper Simon - Reply Share

Add Comment

View Statistics:

Past 24 Hours: 2

Past 7 Days: 19

Past 30 Days: 115

All Time: 3,836