DIY Spot Welder Mini Spot Welding Machine with Quick Release Pen 18650 Lithium Battery Nickel Plate

Specification:Brand newOutput Voltage: 4.2V max.Output Current: 639A max.Feature:Portable spot welding machine, with quick release welding pen.The integrated solder pen uses gold Plate terminal, with fine conductivity and low contact resistance.Adopts a micro-USB charging interface for easy charging.Built-in high-speed battery 2, with fine charge and discharge properties.Fine workmanship and good performance.Easy to use.Long service life.Use Instructions:1. Please extend pressing for 3 seconds. When the buzzer rings, that is turn on\/off.2. Short press the button. If the buzzer rings, that is shift position. Press one time, and it can add 1 gear. 1-9 cycles, and the 9th gear is the strongest welding strength.3. After placing the welding pen, the buzzer rings. Waiting for about 0.5 seconds to trigger welding.4. When charging, the power indicator flashes. When all 4 lights are on to indicate that it is fully . Welding can be performed while charging.colour: blackMaterial: metalsize: 105x83.2x28.8mmPackage Contents: 1*Spot Welder2*welding pensOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.