... nickel-cadmium, button battery spot welder spot welding machine Multi-pulse precision spot welding machine Lithium-ion,Ni-MH, ... shapes, sizes of material. In addition, UP-23 also monitor on the power grid voltage automatically, tracking compensation. UP ... wire, sheet metal, all kinds of metal welding3.Electric parameter Input voltage220V/50Hz(60Hz)Input current32AInput gas sourceCompressed air pressure ...