Cordless Power Tool Battery and Charger Conversion - Ni-Cd / Ni-MH to Lithium-Ion
Lithium Battery + BMS + Nicd/Nimh Charger, It's a cheap and efficient conversion to upgrade your old beloved cordless power tool.

Main used parts:
3S 40A BMS module: https://shorturl.at/drsG1
Pure nickel strip: https://shorturl.at/dGW23