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Most common issue with this is the difficulty with which to open it up.

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  1. Philips Sonicare HX6710 Replacing the Battery, Open housing: step 1, image 1 of 3 Philips Sonicare HX6710 Replacing the Battery, Open housing: step 1, image 2 of 3 Philips Sonicare HX6710 Replacing the Battery, Open housing: step 1, image 3 of 3
    • Remove the brush head

    • Using a thin screwdriver carefully pry open the bottom of the case.

  2. Philips Sonicare HX6710 Replacing the Battery, Remove lower cap: step 2, image 1 of 2 Philips Sonicare HX6710 Replacing the Battery, Remove lower cap: step 2, image 2 of 2
    • Remove lower cap (2 plastic tabs). O-ring is already removed in this picture.

    • Here are the solder connections of the battery: + (red) and - (yellow).

  3. Philips Sonicare HX6710 Replacing the Battery, Replace the battery: step 3, image 1 of 2 Philips Sonicare HX6710 Replacing the Battery, Replace the battery: step 3, image 2 of 2
    • Unwrap the battery and replace it (see Soldering Skills).

    • To avoid a short circuit (the battery will normally still have a remaining charge), start at the positive pole of the battery and unsolder completely from the board.

    • Continue with the negative pole.

    • At the end, loosen the soldering pads from remaining solder, so that the contacts of the new battery can be inserted into the board.

    • Solder teh positive and negative pole.

    • Requires a 3.7V battery, which is approximately 14mm x 49mm (similar to AA).

  4. Philips Sonicare HX6710 Replacing the Battery, controls: step 4, image 1 of 2 Philips Sonicare HX6710 Replacing the Battery, controls: step 4, image 2 of 2
    • Before assembly, check the upper seal and the lower O-ring and replace those if necessary.

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

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Michael S.

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