1Welding power can be powered by lithium battery or 12V car battery. 2The controller adopts single chip microcomputer control, accurate output pulse, LCD display screen, can display welding parameters. 3The soldering pen and the input wire are connected by Ushaped coldpressed terminals, which is convenient for disassembly and replacement. 4The controller adopts automatic welding mode, while retaining the manual trigger interface, you can choose according to your own usage. 5The power board uses 2 ounces of copper, and the soldering pen wire and the input wire use 10AWG multiwire soft wire to increase the overcurrent capacity. 6Five 300A MOS tubes are driven by imported special chips, and the MOS tubes can be used as fast as 20nS, which can switch quickly to prevent tube explosion. 7The controller is mainly for welding 0.1mm to 0.15mm nickelplated steel strip, and the power input adds a 25V10000uF highfrequency lowresistance capacitor for energy compensation to increase stability.