1. Remove previous ear cushion by rotating the clockwise and pulling it off. When reassembling, be sure to line up the locking plates.
    • Remove previous ear cushion by rotating the clockwise and pulling it off.

    • When reassembling, be sure to line up the locking plates.

  2. Remove the screws (9.47 mm Phillips head) from the blue plating on the headset to reveal the inside. Remove the screws (9.47 mm Phillips head) from the blue plating on the headset to reveal the inside.
    • Remove the screws (9.47 mm Phillips head) from the blue plating on the headset to reveal the inside.

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  4. If you are working on the LEFT side ear, you will first have to detach the battery by gently unplugging the white plug on the top of the board. Make sure when unplugging the battery to not pull the manilla colored part which is attached to the board, but the white plug instead.
    • If you are working on the LEFT side ear, you will first have to detach the battery by gently unplugging the white plug on the top of the board.

    • Make sure when unplugging the battery to not pull the manilla colored part which is attached to the board, but the white plug instead.

    • If you are working on the RIGHT side ear, you will first have to remove the charging contacts (2 7.92 mm Phillips screws).

  5. Desolder the necessary wires. (Each side will be slightly different.) Be careful when using a soldering iron. Refer to the desoldering guide for tips. For the purpose of this guide we clipped the wires connected to the board.
    • Desolder the necessary wires. (Each side will be slightly different.)

    • Be careful when using a soldering iron. Refer to the desoldering guide for tips.

    • For the purpose of this guide we clipped the wires connected to the board.

    • Remove the 4 screws (7.71mm Phillips head) using the #0 screw bit, that are holding the board in place.

    • Finally, remove the audio board.

  6. Remove the battery by carefully prying it from the headset. Remove the battery by carefully prying it from the headset. Remove the battery by carefully prying it from the headset.
    • Remove the battery by carefully prying it from the headset.

Conclusion

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

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45 Comments

So there are two batteries in this headset that need to be replaced?

Doug Green - Reply

Also, what battery do I purchase and does anyone know a good source to purchase them?

Doug Green - Reply

Max battery size: 50x36x9mm

Origina battery: 40x30x8mm

The pcm board can be replacement by old battery module.

Dariusz Fukiet - Reply

Only one battery inside. Not sure why this guide takes appart the whole headset.

All steps&pictures related to right side (step 1, 2 and 4) are misleading and unnecessary when doing just battery replacement.

I ordered replacement on aliexpress.

joze_markic_bf - Reply

What part number please and thank you in advance

jon fystro -

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