Battery Spot Welder, 3.2kW DIY Spot Welding Machine, with Welding Pen and Foot Pedal, for Battery Pack, 18650 Lithium Battery, etc - Amazon.com
U.S. Solid USS-BSW08 Battery Spot Welder 42KW Capacitor Energy Storage Pulse Welding Machine for 18650, LiFePO4 Lithium Battery Pack and Copper Metal Welding - U.S. Solid