Spot Welder Machine Product features. 8000W high power intelligent double pulse spot welder with rechargeable internal battery for good performance and long life. The battery welder is designed for welding 18650 batteries and can also be used to weld nickel strips with thicknesses of 0.1, 0.15, 0.2, 0.25 and 0.3 mm. It comes with a soldering pen with good electrical conductivity and low contact resistance. ABS housing material with anodised surface for wear resistance and safety in use. The small and portable design makes it easy to carry around. Product parameters. Colour: Black Input: 100-240V Output: 8.4V Battery type: Lithium battery Spot welding current: 1200A Power: 8000W Internal battery capacity: 9600mA Maximum output voltage: 8.4V Maximum output power: 8000W Thickness of spot welded nickel strip: 0.1, 0.15, 0.2, 0.25, 0.3mm (cannot spot weld copper/aluminium/gold/silver) Machine size: approx. length 15*width 9.8*height 5cm Spot welding pen length approx : 47cm Product list. 1*spot welder 1*Power adapter 1*Nickel tape 1m 1*sandpaper