Using 5 MOS tubes, the maximum current can reach 2390A. High power output design, 99-speed adjustable output power, more precise welding, thousands of points can be continuously welded on nickel sheet/nickel plate. Welding is the principle of using high current and high temperature to rapidly melt the nickel foil part and cool it. Equipped with 2 copper bars, which greatly increases the overcurrent capacity. The welding spot is accurate and beautiful, and supports welding of 0.05-0.3mm nickel, iron and stainless steel. This spot welding machine can be used for spot welding of 14650/17490/18650/21700/26650/32650 lithium cylindrical batteries and NiMH batteries colour: purple Material: PCB Package Contents: 1 x Control Board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.