Features The welding power can be powered by lithium battery or 12V car battery. The controller adopts single-chip microcomputer control, precise output pulse, LCD screen, can display welding parameters. The welding pen and the input wire are connected by U-shaped cold-pressed terminals, which is convenient for disassembly and replacement. The controller adopts automatic welding mode, while maintaining the manual trigger interface, you can choose according to your use. The power board uses 2 ounces of copper, and the solder pen lead and input cable use 10 AWG multi-strand soft wire to increase surge capacity. Feature: 1. Five 300A MOS tubes are driven by imported special chips, and the MOS tubes can be used up to 20nS, which can switch quickly to prevent the tube from bursting. 2. The controller is mainly for welding 0.1mm to 0.15mm nickel-plated steel strip, and the power input adds a 25V 10000uF high-frequency low resistance capacitor for energy compensation to increase stability. Specific: Item Type: Mini Spot Welder Product Description: 1: This controller is mainly used for welding small power banks for battery repair, power tools, model airplanes, etc. 2: This controller requires users to have a certain electronic base and safety awareness. 3: Although sufficient protection has been made for driving the MOS tube, it is inevitable that the blast tube will appear during use. If there is a blast tube, just replace one. 4: For those with high welding requirements, please change the welding power source. After the actual test, when the battery uses 3S, 40C, 5000mHA, it can weld 0.1mm nickel-plated steel strip and 0.15mm nickel-plated steel strip perfectly. The welding needle needs to be ground into a round head, the pressing force is small, and can also be welded; When the battery uses 12V, 50AH car level, it can weld 0.15mm nickel-plated steel strip perfectly. Please note that this is a car battery, not a regular lead acid battery. Size: approx. 0.1~0.15mm/0~0.01inch Package list: 1 spot welder 1 connector 2 power lines 2 soldering pens . Package List 1 x Spot Welder 1 x Connector 2 x Power Input Line 2 x Soldering Pen