spot welder, arc welder, battery charger, vehicle booster in one unit with micro-processor control and digital display. Main feature:- Latest electronic parts and Micro-processor control.- Integrate spot welder, arc welder, battery charger, vehicle starter, melting welder into one unit.- Realize spot weld, washer weld, pulling weld, shrinking, electri weld, melting weld for copper wires and steel ...