Hack the Remington PG6150 beard trimmer replacing the batteries

The batteries of the beard trimmer, after 4 years of career, no longer had the same duration. The autonomy had gone from 60 to 30 minutes. I decided to give it a new life by simply replacing the batteries. I believe it will be able to work another 4 years.

Used material:
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Solder KIT ------------------------- https://amzn.to/3Gj6nqm

Plastic disassembly kit----- https://amzn.to/3ARSE8F


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