DIY M12 Forge 5.0 for 542Nm Impact

 cel: EVE 21700 50PL 60A  5000mA tabless blance mod
Milwaukee Stubby Impact  1/2 542Nm

2026/06 Reliance RS50 70A  5000mA tabless blance mod

2026/10 change new spot welder Fnirsi SWM10 --> Awith UK3
 battery bus bar nickel --> Nickel plated-copper 0.15 / slit cutting