Suitable for 14650, 17490, 18650, 21700, 26650, 32650, etc. Cylindrical lithium batteries, nickel metal hydride batteries, etc., can be spot welded firmly. Supports 0.1-0.3mm nickel sheet spot welding MOS tubes*5. After 5 parallel connections, the theoretical maximum current can reach about 1700A. Five positions of MOS tubes are reserved on the back of the PCB. This is convenient for players who are familiar with electronic knowledge and have practical skills. Add MOS tubes yourself to increase the fun of DIY. Bilateral output is convenient for spot welding. The product is marked and it is not easy to connect it incorrectly 0-99 gears, 1 gear is lowest, 99 gear is highest, increase gears in sequence when using 8m2 spot welding pen, 10AWG wire, copper and aluminum oxide spot welding needle, which ensures excessive current capacity and durability, which greatly improves the efficiency of spot welding, Weight: 0.5291094288 Pounds, Manufacturer: Rtxbvg