General description This Mini Spot Welder Machine DIY Kit features a powerful adjustable control board designed for welding 18650 batteries and other nickel-based sheets. It utilizes 5 MOS tubes, allowing for a maximum current of 2390A, enabling precise and efficient welding with 99 adjustable power settings. The machine is capable of continuously welding thousands of points on nickel sheets, ensuring high-quality results. Technical specifications Max current: 2390A Power settings: 99 gears adjustable Welding thickness: 0.05-0.3mm nickel sheet, iron sheet, stainless steel sheet Compatible battery types: 14650, 17490, 18650, 21700, 26650, 32650 Material: Plastic Measurement error: +/- 1-3cm Compatibility and accessories Includes 2 copper bars to enhance overcurrent capacity Designed for use with cylindrical lithium batteries and nickel-metal hydride batteries Usage This spot welding machine is ideal for DIY enthusiasts looking to weld battery packs or other metal sheets with precision.