DH30 Spot Welder Adjustable 30 Gears Portable OLED Screen Spot Welding Machine 5000mAh Lipo Include for Max 0.2mm Nickel Strip The DD3.0 is new to the market, a mini spot welder that can weld 0.1-0.15mm nickel pieces in up to 30MAX) positions was introduced. It has a 0.91" screen, which makes it very easy to visualise the power level etc. It is very convenient and quick Specifications: Screen: 0.91 Inch OLED Material: Metal Case Battery Capacity: 5500mAh Welding Output: 4.2V MAX 650A USB Output:5V MAX 2.4A Charging Port: Type-C Product Size: 103x83x29mm Package size: 143x107x48mm Spot Welding Power Setting: Start with the first gear and increase the power slowly until it can be welded. Do not increase the power if it can be welded. Avoid MOS bombs. The black solder joints indicate that the power is too high. When welding, press down the soldering pin lightly, and the nickel sheet and the battery can be bonded together. The harder you press, the less solid the welding will be. It will automatically trigger after pressing down for one second. Adapter Selection Requirements: The adapter requires 5V, 2A or more. If you dont have such adapter, we recommend buying it at our store together to better charge the spot welder. USB Output Port Description: Because the internal circuit of the spot welding machine is different, there may be some compatibility issues with the phone charging, so the phone cannot be charged temporarily, if you need charger phone,you can Short-circuit 2 and 3 of the usb output port. And for android cellphone,mobile phone charging protocols are different, and currently cannot all support fast charging protocols. Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement. 3. Please full charging before using! 4. The two needles of the spot welding pen cannot be touched together, which will cause a short circuit and burn the machine. Package Included: 1x Spot Welder 2x Soldering Pen 2x Nickel Sheets 1x USB Cable 1x Manual 1x Box