This video demonstrates how to replace the rechargeable batteries in a Braun BT5050 Beard Trimmer. It should be suitable for other similar products, but please check the size and capacity of the existing batteries before buying replacements.

More details about the repair can be found on my blog:
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If you watch with the sound on and like the track in the video, it's an original song called *Fireworks*. You can download it from my SoundCloud.
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*How to replace the battery in a Braun BT5050 Beard Trimmer – Step by Step Guide*
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1. Remove the guard 0:02
2. Flip up the blade and gently release it from its pivot 0:08
3. Undo the two Torx (TX6) screws and remove the metal clip 0:18
4. Prise the two halves of the body apart 0:36
5. Pull out the internal housing and prise off the plastic lid and the pad holding the wires 0:45
6. Lever away the two clips connecting the circuit board to the charging pins 1:22
7. De-solder the old batteries, cutting away the old solder tabs 1:54
8. Position and solder the new batteries in the correct polarity 3:11
9. Replace the circuit board, bending the charging pins back into place 3:54
(The circuit board should ‘snap’ back into place to ensure a good connection)
10. Verify that the motor runs and that the charging LED lights when connected to power 4:27
11. Reassemble the housing in reverse 5:00

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