Feature:1. ADJUSTABLE AND DIGITAL DISPLAY: Support 8 speed power adjustment, digital tube provide real time level display2. HIGH TEMPERATURE RESISTANT: High frequency capacitor, low internal resistance, high temperature resistance of 105 degrees Celsius3. CLEAR AND TIDY: Double sided outlet for easy spot welding, Chinese marking, not easy to connect incorrectly4. EFFICIENT AND DURABLE: Ultra thick copper tube, 1OAWG wire, alumina copper spot welding needle to ensure excessive current capacity and durability, greatly improve spot welding efficiency5. WIDELY APPLICABLE: Suitable for 18650, 26650, 32650, etc., other cylindrical lithium batteries, nickel hydrogen batteries, nickel cadmium batteries, etc. can be welded firmlySpecification:Item Type: Spot Welder Control BoardMaterial: PCB, copperAvailable Power Supplies: 12V car starting power supply30Ah-35Ah capacity lithium battery pack12V 20-45Ah acid battery with good performance2S. 3S. 4S model aircraft lithium battery pack3 Strings of high rate lithium battery packs(charger, switching power supply, transformer cannot be used as a power source).Package List:2 x Cable2 x Spot Welding Pen1 x Control Board2 x Nickel Belt4 x Screw4 x Nut2 x Heat Shrinkable SocketNote:1. After the system is powered on, the digital tube displays 0. At this time, welding is not possible, and the output power needs to be adjusted by the button (18 levels).2. The recommended power supply voltage is 7V16V, and the working current is 100300A. Exceeding this range may damage the control board.