Spot Welder Pen compatible with Battery Repair 6.5V-16V

6.5v 16v 100a 900a led

board adopts intelligent control board adopts eliminate tube blowing high rate lithium INTELLIGENT LOGIC LOGIC CONTROL LOGIC CONTROL CHIP PCB circuit board pen control board pen PCB circuit Spot Welder Spot welder control welder control board Welder Pen Welder Pen compatible welder pen control welder pen PCB