Feature: 1. Powerful Function: Spot welder support 0.1 to 0.2mm thin plate spot welding, welding and welding joints more thorough. 2. Design Intention: Bilateral lead for easy spot welding, product identification to avoid misconnection, 99 gear power adjustment, digital tube real time gear display. 3. Multiple Protection: Real time voltage monitoring protection will display UE alarm code when the voltage is not in the range of 8 to 17V. Real time MOS tube temperature protection will show CE alarm code when the temperature exceeds 45 Celsius degrees. 4. High Efficiency: 10AwG welding wire, oxidized copper spot welding needle, to ensure over current capacity and durability, greatly improving the efficiency of spot welding. 5. Large Capacity: Spot welder circuit board uses 5 MOS tubes, the maximum spot welding peak current can reach to 1500A. Solder more penetrationmore beautiful solder joint. 6. Wide Application: Spot welder circuit board for 18650 26650 32650 lipo battery welding and other cylindrical lithium batteries, nickel hydrogen batteries, nickel batteries, etc. can be welded firmly. Specification: Item Type: Spot Welder Model: Z99 Material: PCB and Copper Use: 18650 26650 32650 lipid battery welding, portable, stable and reliable Real Time MOS Tube Temperature Alarm: If MOS tube temperature exceeds 45°C, CE alarm code will be displayed Wire: 10AWG Welding Peak Current: 1500A maximum Standby Power Consumption: <0.5ma Weld Nickle Thickness: 0.1 to 0.2mm Gear: 99 gears Display: 3 digit digital tube display Power supply requirements: 1. Acid battery 12V20 to 40AH. 2. Model batteries or large single, 3S to 4S, capacity (AH) X discharge rate (60C is the discharge rate of 60) between 100 to 300 is more appropriate. 3.12V car EC5 interface start, the peak current should not exceed 600A. 4. Prohibit the use of switching power supply, transformer, charger, water battery to the spot welding machine power supply, will damage the spot welding machine control circuit. The resistance of the battery is lower than 7 milliohms.. Package List: 1 x Circuit Board2 x Connection Cables2 x Heat Shrink Tubes4 x Nuts4 x Screws1 x Nickel Bar2 x Spot Solder Pens Note: Gear down or function setting:1. As gear reduction key: In the main interface, press it, reduce 1 gear (fine adjustment).2. As function setting key: Long press to enter to the setting menu (please do not move the setting if not necessary)Gear up or down.1. As gear up key: In the main interface, press to add 5 gears (coarse adjustment)2. As switch key: Long press the key to turn off the power, long press when the power is off to turn on.