Feature: 1. Aluminum alloy shell material, fireproof and anti‑drop, surface anodizing technology is anti‑wear, safe to use. 2. Easy to operate, it can be triggered automatically without a switch, release your hand or foot pedal, it will automatically turn off after 10 minutes of inactivity. 3. Built‑in high‑rate polymer power battery, the maximum output current is up to 500A, after full charged, it can weld thousands of points continuously. 4. Small size, easy to carry and store, convenient to use and with good performance. 5. With complete tools, you can operate it yourself, suitable for DIY welding. Specification: Item Type: Spot Welding Machine Material: Aluminum alloy Colour: Black Welding Thickness: Approx. 0.1 ~ 0.2mm / 0 ~ 0.01in Output Voltage: Maximum 4.2V Output Current: Maximum 500A Design Current: Maximum 1000A Battery Capacity: 4300mAh Purpose: Used for welding nickel sheet of cylindrical battery Package List: 1 x Spot Welding Machine 2 x Spot Welding Pen 1 x Type C Cable