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Battery Spot Welder: Welding power can be powered by lithium battery or 12V car battery. NOTE- Do not exceed 50 gears. 2 Touch Welding Modes: Using automatic touch welding mode, while retaining the manual trigger interface, you can choose according to your own use. Pulse Accuracy: The controller is controlled by a single chip microcomputer, and the output pulse is accurate, LCD display screen, can display welding parameters. Ensure the welding quality. Easy to Disassemble: The soldering pen and the input wire are connected by U-shaped cold-pressed terminals, which is convenient for disassembly and replacement. What You Will Get: You will get 1 x spot welder controller, 2 x Welding pen, 2 x Power input line (Red and Blue), 1 Pair x U-shaped cold-pressed terminal.