Given the complexity of the repair and the risk of significant breakage, wouldn't it be simpler to provide an external battery solution connected via USB type C to the controller with a battery holder. It would be enough to have wristbands with a pocket, it's not expensive, 10€ maximum https://www.amazon.com/Pockets-Running-Wristband-Walking-Jogging/dp/B0CNDHPVTD/ref=sr_1_55?crid=E...-sCJ4ek0votDKnY37_ZDd7hQIDGjSnLYWqGHTqim4...-FhiUouciq0kfH7FvEBeYO1Bn_DzQ1Cusbl8nnJ9b...-5kGd2CZ_mv8fgQ-G_u80BxczX9CDp1j_dSNDy55-A7IN5rBdUeh14VVhsD4icqgyUSWuICvJIK7_KUP_...-55&th=1 https://www.amazon.com/Type-C-Cable-10inch-22AWG-Pigtail/dp/B09C7SLHFP/ref=sr_1_30?crid=3...-AMZfmzoSmGkZ9Gm2XHVYBh-ykI5p0gxpbBAFValiS3za1HxGOuvk5_cMN00nv3z...-D11UtJx4nybswbGPICluy9A2iGH_rEXGAsx2NwLa...-korE151eUZE36pbKkPCGs&dib_tag=se&keyword...-30 https://www.amazon.fr/Cameron-Batterie-rechange-contr%C3%B4leur-Valve/dp/B0D147NQWS/ref=sr_1_1?__mk_fr_F...-wyMA9sb8-645334g5sWyKQXN1yQHDUxzplPKrCjT9jOT7WZCN...-1
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