Saltar al contenido principal

Repara tus cosas

Derecho a reparar

Partes y herramientas

Introducción

This guide will help you replace a Fitbit Alta battery. If you have let your Fitbit die for long period of time, have not been following proper charging practices, or have owned your Fitbit for multiple years, the battery may be at the end of its life. In this case, the battery may not turn on, hold a long charge, or stay on when unplugged.

This process involves exposing the internal components of the Fitbit, desoldering and disconnecting the old battery, and soldering in a new battery.

Caution: Fitbit can become dysfunctional if soldering is done incorrectly, and will not work if the wires are attached to the wrong ends or if the motherboard is exposed to excessive, prolonged heat.

The process will require a T2 Torx Screwdriver, tweezers, razor blade, soldering iron, and solder.

  1. At one of the corners, push the tweezers in between the metal casing and screen cover. Use the tweezers to wedge the two pieces apart. Repeat on all four corners. This step requires a large amount of force. Using a razor blade to slide along the length of the screen cover/metal casing may help. Once the screen is removed, the Fitbit should look like the third image.
    • At one of the corners, push the tweezers in between the metal casing and screen cover. Use the tweezers to wedge the two pieces apart. Repeat on all four corners.

    • This step requires a large amount of force. Using a razor blade to slide along the length of the screen cover/metal casing may help.

    • Once the screen is removed, the Fitbit should look like the third image.

  2. The screen is partially attached to the motherboard with adhesive, so gently slide the tweezers underneath the entire screen to detach it, then lift it up. The screen is made out of thin glass, so make sure not to be too rough. After this step, the screen should still be connected to the motherboard through a small black hinge. This piece should NOT be removed/cut.
    • The screen is partially attached to the motherboard with adhesive, so gently slide the tweezers underneath the entire screen to detach it, then lift it up.

    • The screen is made out of thin glass, so make sure not to be too rough.

    • After this step, the screen should still be connected to the motherboard through a small black hinge. This piece should NOT be removed/cut.

  3. Once the screen is lifted, the motherboard will be exposed. Remove the  center screw holding the motherboard in place with the T2 Torx screwdriver.
    • Once the screen is lifted, the motherboard will be exposed.

    • Remove the center screw holding the motherboard in place with the T2 Torx screwdriver.

  4. Kits para Nintendo Switch

    Una solución rápida para volver al juego

    Comprar kits de Switch

    Kits para Nintendo Switch

    Una solución rápida para volver al juego

    Comprar kits de Switch
  5. The motherboard is held in place by two small hooks. With the screen opening to the left, use your finger to gently press down and slide the motherboard to the right. Once free from the clips, lift the board up. The motherboard is still attached to the casing by some wires, so make sure not to pull it completely out. The motherboard is still attached to the casing by some wires, so make sure not to pull it completely out.
    • The motherboard is held in place by two small hooks. With the screen opening to the left, use your finger to gently press down and slide the motherboard to the right. Once free from the clips, lift the board up.

    • The motherboard is still attached to the casing by some wires, so make sure not to pull it completely out.

  6. Once the motherboard is lifted, you will use the tweezers to detach the old battery (located in the bottom left) from the casing. Note that the clear yellow section is a part of the battery. The battery is held into the casing with adhesive, so it will need to be lifted away in the same fashion that the screen was lifted away in step 2. Once the battery is removed, lift the motherboard and attached components completely out of the casing.
    • Once the motherboard is lifted, you will use the tweezers to detach the old battery (located in the bottom left) from the casing. Note that the clear yellow section is a part of the battery.

    • The battery is held into the casing with adhesive, so it will need to be lifted away in the same fashion that the screen was lifted away in step 2.

    • Once the battery is removed, lift the motherboard and attached components completely out of the casing.

  7. A soldering iron must be used to melt the solder connecting the battery to the motherboard.
    • A soldering iron must be used to melt the solder connecting the battery to the motherboard.

    • A guide of how to solder can be found here: How To Solder and Desolder Connections

    • Cut the wires of the new battery to an appropriate length and strip the ends of the wire casing with the razor to expose the wire.

    • Solder the new battery to the motherboard.

    • Be sure to connect the correct wires to the correct points on the motherboard, or else device will not work.

  8. Repeat steps 3-5 in reverse order.
    • Repeat steps 3-5 in reverse order.

    • The screen may have reattached itself, preventing you from completing step three (securing the motherboard). If so, repeat step 2 and then proceed to step 3.

    • You will need to lightly press down on the motherboard while screwing it in, or it will not make contact.

    • To reattach the screen, line it up to the metal outline and gently press it down. You may want to clean the screen with a cloth to remove any dust or fingerprints before proceeding to the next step.

  9. Replace the screen cover, making sure to match the gold plate on the cover to the gold hook located on the right upperhand corner of the motherboard. This step requires a bit of force, so be sure to use both hands to balance your force evenly across the screen cover, or else you will risk cracking it.
    • Replace the screen cover, making sure to match the gold plate on the cover to the gold hook located on the right upperhand corner of the motherboard.

    • This step requires a bit of force, so be sure to use both hands to balance your force evenly across the screen cover, or else you will risk cracking it.

  10. Plug your Fitbit into its charger to turn it back on and charge up the new battery, if needed.
    • Plug your Fitbit into its charger to turn it back on and charge up the new battery, if needed.

Conclusión

Your Fitbit should now hold a charge.

3 personas más completaron esta guía.

How about screen replacement? Is there a replacement part for that?

Tom Hernandez - Contestar

Hi, Tom.

I haven’t seen anything about replacement screens online. To the best of my knowledge, Fitbit doesn’t offer replacement parts for any of their devices.

Emily Parcell -

My Fitbit Alta HR has no center screw. The battery connects from the end of the mother board and there are two very small screws on the other end. It is virtually impossible to solder the new battery in without shorting to the two hold down clamps. Virtually Junk…

Keith - Contestar

Maybe try getting a few really small pieces of electrical tape to cover the clamps?

Benjamin Hufendick -

Keith,

Your Fitbit may be an Alta HR, rather than an Alta. I have the same situation you do. The PCB in the HR is different, and in the center has a very small flat-flex cable to the HR sensor below. If you are very careful, you can fold back a small piece of tape holding the flex flex in place (look closely, it is very hard to see), and then you can gently disconnect the HR sensor. The connector lifts straight up, perpendicular to the surface of the PCB. After you have disconnected, you can remove the two screws and slide out the screen, PCB, and battery assembly as a single unit. The HR sensor will remain behind in the case. I would recommend using a plastic tweezers for this process rather than metal, as if the PCB is powered you could damage it in the process.

I took some photos, but I don’t believe I can post them here.

jmmull - Contestar

Agregar Comentario

Ver Estadísticas:

Ultimas 24 horas: 112

Ultimos 7 días: 598

Ultimos 30 días: 2,649

Todo El Tiempo: 10,552