Replacing the Teufel Real Blue NC battery

ID: 145396

Description: On the Teufel support website, the battery is...

Steps:

  1. Find a replacement battery. The original battery is an EVE 622632 Lithium Polymer (Lipo) battery with 3.7V 600mAh, size 33x25x5mm. I couldn't find them in Germany.
  2. A slightly larger battery is a replacement battery for a Logitech Mx Master 2 mouse
  3. Unfortunately, the connector is not identical and must be resoldered
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  4. The ear pads are clipped in all around. Carefully pry out with a plastic spatula.
  5. Loosen 4 Phillips screws and carefully lift the loudspeaker upwards.
  6. The cable on the speaker is long enough to lay it next to it
  7. The battery is on the side where the ANC switch (noise canceling on/off) is. (ANC slider marked with arrow in the picture)
  8. The side with the USB connection does not have to be opened
  9. The battery is under the green circuit board. The circuit board has a small cutout. Carefully turn the circuit board until the cutout is under a plastic tab. Then the circuit board can be lifted out
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  10. The original battery is stuck down with double-sided tape and can be carefully levered out.
  11. Because the plug does not fit, pinch off the original plug
  12. The same applies to the spare battery
  13. The spare battery comes with an extra cable (white). This is for a temperature sensor, but the headphones don't use it. So simply cut off with the block
  14. Solder the original connector to the replacement battery. Red-to-red, black-to-black.
  15. Cover the solder joint with shrink tubing
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  16. The replacement battery is slightly larger than the original. But the aluminum case can be gently pressed with your fingers so that the battery fits perfectly into the holder
  17. Secure with double-sided tape
  18. There is black foam rubber on the original battery. This can be snapped off and glued to the spare battery
  19. Glue the battery in place, plug the connector into the circuit board and hook the circuit board back under the plastic tabs.
  20. Make sure that the ANC on/off slider is hooked into the circuit board
  21. Put the loudspeaker back on and screw it on with the four screws
  22. Clip on the ear pads, done.
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