Specification: Item Type: Spot Welding Machine Material: ABS brass Purpose: DIY 0.2MM nickel strip for 18650 battery Power: 5000W Battery: 4000mah Automatic Welding Adjustment Method: How to Use: 1. When the upper of the welding nail becomes black, sand it with fine sandpaper; 2. Press the nickel tape with two soldering pens and step on the foot switch; 3. Wait about 0.5 seconds for output spot welding, and then release the foot switch; 4. Do not use the voltage below 7.3V, please charge in time. Package List: 1 x Welding Machine Host 1 x Plug 1 x Iron Sheet 1 x Matte Paper