Mini spot welder with 99-level adjustable power, suitable for welding cylindrical lithium-ion batteries

The welding process relies on the principle of high current and high temperature, which quickly melts part of the nickel sheet and then cools it. It uses 5 MOS tubes, and the maximum current can reach 1700A. Five MOS tube slots are reserved on the back of the circuit board to allow DIYers to add their own MOS tubes. High output power design, 99 gear output power adjustable, more precise welding, suitable for continuous welding of thousands of points on nickel/nickel-plated sheets. With real-time digital speed display function, 0-99 speeds, 1 speed is the lowest, 99 speeds is the highest, and the speeds gradually increase. It supports nickel soldering sheets from 0.1 to 0.3 mm with strong and aesthetic soldering points.This product can be widely used for spot welding of cylindrical lithium batteries and nickel-metal hydride batteries such as 14650/17490/lithium battery/21700/26650/32650, etc. Square 8 welding pen, 10AWG wire, is made of multiple strands of high temperature wire with high twist resistance and more sensitive operation. Thickened pure copper welding pen, with alumina copper spot welding needles to ensure high current passing capacity and high durability. The cold pressing process achieves large contact areas with pure copper gaskets to reduce internal resistance. Optional Housing: Transparent protective housing, aesthetic and safer, prevents damage caused by short circuits on the control board due to leaks from exposed components.Note: Switching power supplies, transformers, chargers, water batteries and rechargeable batteries must not be used as power sources! Specifications: Name: Spot Welding Machine Kit Material: Printed Circuit Board Type: With Case Working Voltage: 6.5-16V Working Current: ＜20mA Standby Power Consumption: ＜0.5mA Recommended Working Temperature: -10℃ to 60℃ Voltage: 12.0V Welding Current: 1700A Max. Welding Thickness: 0.1-0.3mm Item Dimensions: 90 * 60mm / 3.54 * 2.36in Package Dimensions: 120 * 120 * 20mm / 4.72 * 4.72 * 0.79in Package Weight: 180g / 6.35oz Packing List: 1 * Control Board 2 * Cable Input 1 * Pair of Soldering Pens 2 * Heat Shrink Tubing 6 * Screws 1 * Nickel Sheet 1 * Housing Kit 1 * User Guide