Spot Welder Controller Module Battery Group Spot Welding Machine OOTDTY Features: The Spot Welder Control Module is developed for DIY or simple battery welder. It is mainly used for nickel welding single battery or rechargeable battery. For welding other battery materials of different thickness, such as polymer electrode without nickel plating, it must be connected with enough power transformer for welding. This module includes the main board and display, optional bi-directional SCR 40A and 100A, excluding the welding transformer, welding pen and other auxiliary tools. You can save the last operation, monopulse triggers this module. It is suitable for stand-alone or simple welding welding, single battery welding or rechargeable battery. Specification: Material: Copper & Plastic Type: 40A/100A Electric Current Measurement: 9x4.5x1.5cm/3.54x1.77x0.59inchesPackage Included: 1 x LCD Digital Dual Pulse EncoderNote: Please allow 0-1mm errors due to manual measurement, please make sure you do not mind before ordering.