Feature: 1. Use screws to fasten more securely, without worrying about falling parts. 2. The welding current is about 90A~130A, and it is easy to weld the common 0.1mm~0.12mm nickel plated sheet. 3. After several generations of product updates, it is now upgraded to automatically trigger welding, freeing the finger of the button. 4. Complete tools, you can operate it yourself, suitable for DIY enthusiasts 5. 18650/26650/32650 lithium battery( not included) can be welded, portable, stable and reliable Specification: Item Type: Spot Welder PCB Circuit BoardSystem Voltage: 12V-14.6V Working Current: 90-150A 1. 18650/26650/32650 lithium battery( not included) can be welded, portable, stable and reliable2. The user needs to bring his own 12V battery for power supply, and the welding current is about 90A~130A. It is easy to weld the common 0.1mm~0.12mm nickel plated sheet. 3. After several generations of product updates, it is now upgraded to automatically trigger welding, freeing fingers.. Package List: 2 x Input Line1 x Circuit Board 2 x Output Line And Soldering Pen2 x Heat Shrink Tube1 x Screw Resistor Accessories Set Note: 1. If the battery is good enough and the internal resistance is very low, there may be a large current overload.2. If you are not sure about the battery, it is best to extend the cable by about 1 meter with 2.5² or 4², which can reduce the risk of burning the power tube.3. Please note that the new type and old type of this product will be sent randomly,and make sure you will not mind before ordering.