5000W high power handheld spot welding machine prefect for welding 18650 battery. 0-800A current adjustable design, 80A/gear, totally 10 gears of the rotation knob, you can adjust it easily which can be used to welding nickel-plated sheets within 0.1mm-0.15mm. Features: Battery welding machine is specifically designed for 18650 battery welding and it also can be used to weld nickel strips with thickness of 0.15MM. Come with welding pen with good conductivity and low contact resistance. 5000W High power spot welding machine, good performance and long service life. ABS shell material, surface anodizing technology, anti-abrasive and safe to use. Compact and portable size design can easy to carry with you. There are 110V and 220V machine versions to choose from. Specification: Type: With Foot Pedal / Without Foot Pedal (Optional) Plug: US/EU (optional) Power: 5000W Material: ABS Case