Z99 Spot Welder Circuit Board 3 Digit Digital Display Mini DIY Spot Welder Battery Storage Spot Welder Set 12V DC 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.