Introduction

The rechargeable battery in the tooth brush will be replaced.

  1. Pull the brush head away from the handle to remove it.
    • Pull the brush head away from the handle to remove it.

  2. Push the flat edge of a metal or nylon spudger between the seal and the toothbrush body and pry it open. Do this all around the edge until the seal is partially sticking out.
    • Push the flat edge of a metal or nylon spudger between the seal and the toothbrush body and pry it open. Do this all around the edge until the seal is partially sticking out.

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  4. Apply pressure to the shaft by pressing it against a firm and flat surface. Continue to apply pressure until the electronics located in the interior are exposed.
    • Apply pressure to the shaft by pressing it against a firm and flat surface. Continue to apply pressure until the electronics located in the interior are exposed.

  5. Grab the circular, plastic base with the o-ring and pull it outward.
    • Grab the circular, plastic base with the o-ring and pull it outward.

  6. Remove the cap that is attached to the end of the interior by removing the two clasps that are holding it in place.
    • Remove the cap that is attached to the end of the interior by removing the two clasps that are holding it in place.

  7. Desolder the battery from the circuit board. Here is a guide on how to desolder. Remove the old battery and replace it. Using the same guide, solder the battery in place.
    • Desolder the battery from the circuit board. Here is a guide on how to desolder. Remove the old battery and replace it. Using the same guide, solder the battery in place.

    • The soldering points are shown in red.

Conclusion

To reassemble your device, follow these instructions in reverse order.

20 other people completed this guide.

Joanna Moraza

Member since: 04/14/2015

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Cal Poly, Team 4-6, Maness Spring 2015 Member of Cal Poly, Team 4-6, Maness Spring 2015

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19 Comments

has anyone ever done this successfully? OMG it seems daunting!!!!

Jo - Reply

I'm going to try it. Now, to find a battery source.

Scott Minton - Reply

Anyone knows where to purchase such battery and its type/sort code?

Ben Salem - Reply

The battery is a 14500 li-ion with soldered pins.

I bought this one without pin and will try to solder them:

http://www.ebay.de/itm/371716530024

Here, you can buy the version with pins:

https://www.amazon.com/Battery-Sonicare-...

mamuc -

Prying open the bottom of the brush like that can damage the plastic. There's a damage-free technique detailed on this guide:

http://toothbrushbattery.com/guides/phil...

Dave W - Reply

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