The FNIRSI SWM-20 1200A Dual-Pulse 2-in-1 Portable Battery Spot Welder is a high-performance intelligent spot welding machine designed for professional battery pack assembly, lithium battery repair, and DIY electronics projects. Featuring 1200A peak welding current and dual-pulse welding technology, it delivers strong, stable, and reliable welds on nickel, iron, stainless steel, and other compatible materials.  Equipped with a 2.4-inch TFT color display and an intuitive rotary control knob, the SWM-20 allows precise adjustment of welding parameters, including preheat, pulse, interval, and continuous welding points. Powered by dual 5000mAh high-capacity batteries, it also functions as a portable USB power bank, making it an ideal tool for fieldwork and workshop applications. Advanced 8-in-1 safety protection ensures reliable and secure operation during every welding task.