Feature: 1. SCOPE OF APPLICATION: Spot welder PCB circuit board is portable, stable and reliable. 18650 26650 32650 lithium batteries (not included) can be welded. 2. WELDING CURRENT 90A‑150A: Spot welder circuit board welding current is about 90A‑150A, can easily weld the common 0.1‑0.12mm / 0.004‑0.005in nickel plated thin plate. 3. AUTOMATIC TRIGGER WELDING: After several generations of product updates, it is now upgraded to automatic trigger welding, freeing the fingers of the button. 4. FIXED MORE FIRMLY: 12V 90‑150A spot welder circuit board uses screws to fix more firmly, so you don't have to worry about parts falling off. 5. COMPLETE TOOLS: Spot welder PCB circuit board DIY kit tools are complete, you can operate yourself, suitable for DIY enthusiasts. Specification: Item Type: Spot Welder PCB Circuit Board DIY Kit Material: PCB, Metal, Rubber Function: Dot Welding DIY System Voltage: 12V-14.6V Working Current: 90-150A. Package List: 1 x Spot Welder Main Board1 x Heat Shrink Tube1 x Capacitor Heat Shrink Tube2 x Copper Wire Ears2 x Spot Welding Pen4 x Screw Cap1 x Nickel Sheet