Features Smart Welding Tool: With 5V maximum output voltage and 650A maximum output current, the spot welder is ideal for 0.1‑0.15mm thick strip. 5500mAh Power Bank: Moreover, the rechargeable spot welding machine can work as a portable power bank, which will largely improve efficiency. Rechargeable Using: The 5500mAh large capacity battery can be fully charged within 3 hours, and can also continuously work for a long time. Reliable for Works: The welding pens have good conductivity, torsion resistance, and low contact resistance, ensuring easy and safe operation. Convenient Carrying: Light in weight and compact in size as well, the spot welder and accessories are very convenient to carry for outdoor use. Specification: Item Type: Spot Welder Battery Type: 1 x high speed rechargeable polymer lithium battery, 5500mAh. Shipped with built in battery. Output Voltage: 5V, maximum. Output Current: 650A, maximum. Design Current: 1200A, maximum. Charging Interface: Type C Input Power Supply: 5V 2A Applicable Strip Thickness: 0.1-0.15mm Package List: 1 x Spot Welder 2 x Welding Pen 1 x Strip 1 x Cable 1 x Storage Box 2 x Accessory Package List 1 x Spot Welder 2 x Welding Pen 1 x Nickel Strip 1 x Cable 1 x Storage Box 2 x Accessory