Features: brand new and high quality Lightweight and portable, stable and reliable, wear resistant and can provides long service times. Using 5MOS tubes, the maximum-current can reach 1700A; ​5MOS tube positions are reserved on the back of the printed circuit board for DIY players to add their ownMOS tubes Suitable for welding 14650/17490/18650/21700/26650/32650 battery. High-power output design, 9 gear adjustable output power, more precise welding, suitable for continuous welding of thousands of points on nickel plates. With digital tube gear display function, 0-9 gears, 1st gear is the lowest, 9th gear is the highest, and the gears gradually increase. (8-9 gears are high-power gears, it is recommended to weld three times and stop for ten second, which can protect the life of the welding plate) Specifications: Material: Printed Circuit Board Working voltage: 6.5-16V Working current: <20ma Standby power consumption: <0.5ma Recommended operating temperature: -10°C to 60°C Voltage: 12.0V Welding current: 1700A Welding thickness: 0.1-0.3mm Capacity: 20AH-80AH (the new battery does not exceed 45AH, if the current limit exceeds 45AH, please consult customer service) or: 4-5 strings of ultra-farad capacitors Product size: Approx. 90x60mm/3.54x2.36in Package Includes: 1 Set Spot Welder note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to thedifference between different monitors, the picture may not reflect the actual color of the item.