1MCU Control: The controller adopts single chip microcomputer control, the output pulse is accurate, with good welding quality. 2LCD Screen Display: With LCD screen display, the controller can display the welding parameters, the reading is clearer. 3With 10AWG Input Wire: The soldering pen input wire use 10AWG soft wire, with U shaped cold pressed terminal connection, easy to disassemble and replace. 4Stable Welding: Add a 25V 10000uF high frequency low resistance capacitor to the power input terminal for energy compensation and increase welding stability. 5Automatic or Manual Control: The controller adopts automatic welding mode, while retaining the manual trigger interface, which can be selected according to your usage. Item Type: Portable Spot Welder Machine Material: PCB + LCD Product Use: Battery repair and small battery welding Color: Red Welding Method: Manual or automatic (adjusted by the square label button) Power Input Cord Length: Approx. 21.5cm / 8.5in Welding Pen Length: Approx. 42.5cm / 16.7in Adapter Power Supply: 12V car battery, 3C/40-70C or 5000mAh lithium battery (not including battery) Welding Nickel Sheet Thickness: 0.1-0.12mm 1 x Spot Welding Machine 2 x Welding Pen 2 x Power Input Cable 1 x Connector 1 x English User Manual 1. Do not pull out the welding pen when in use.2. Pay attention to moisture proof and waterproof.