DIY Lithium DRILL Battery

Hi, everyone! Today I’m gonna show you how I converted (replaced) my old Ni-Cd drill to li-ion using 18650. I used: 1) High-Amps (30A) Lithium batteries 18650, capacity 3000mAh: 2) BMS Protection Board For Li-ion (12,6V/3S 20A): 3) 12,6V Lithium battery charger (adapter): 4) Battery level indicator: 5) Small push switch: .