Features: With 6 fine quality mos tube, the max.current can reach to 1800mAh, and the welding current is 100A~900A. Support 0.1~0.3mm nickel sheet to sopt-welding, you can use it for the nickel sheet weldings of the lithium battery by yourself. After connecting the power supplys in the correct way, you can turn it on and use it. After short pressing the capacity, magnification and gear buttons, select the corresponding function to perform welding. There are 6 gears of welding power to adjust. With the high power and low power alarm functions, intelligent control, give you a better using experience. The small capacity battery and direct current power supplys cannot be used as power supplys. Battery discharge capacity need 100A, you can use the high rate lithium-ion battery-pack or others which meet the conditions.