GX591 Lithium Battery Spot Welder 99 Gears Adjustable 12V Mainboard Welder with Automatically Trigger Welding for 18650 Battery _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ GX591 DIY Spot Welder Set Digital Tube Display 12V Welding Circuit Board 99 Gears Adjustable with Automatically Trigger Welding Support Welding 0.1mm-0.2mm Nickel Sheet 18650 Battery Spot Welding Tool _x000D_ Feature: _x000D_ 1. High-speed: With its high-speed single-chip design, this Welding Machine Control Board is able to deliver intelligent, precise results every time. It features real-time battery voltage display and high visibility for point welding strength. _x000D_ 2. MOS Tube Technology: The eight MOS tubes used in this welding machine allow for peak currents of up to 2400A, resulting in strong, resilient welds that look great too. It supports nickel welding plates as thin as 0.1-0.2mm. _x000D_ 3. Adjustable Power Output : Thanks to its high-precision power output design, this Battery Energy Storage Spot Welding Machine can adjust its power output across 99 different levels. This makes it ideal for welding thousands of points continuously with high accuracy, especially on nickel plates. _x000D_ 4. Real-time Digital Display: Featuring a 3-digit digital display, this DIY Spot Welder Set can show information such as the current gear and battery voltage, greatly enhancing ease of use. The display also alternates between gear and power supply voltage when idle. _x000D_ 5. Flexible Welding Pen and Durable Construction: With its 12AWG multi-strand high-temperature wire, this flexible welding pen of DIY Spot Welder offers greater resistance to twisting and more responsive operation. Additionally, the thick pure copper welding pen and aluminum-copper needle offer strong current capabilities and durability. _x000D_ _x000D_ _x000D_ _x000D_ Specification: _x000D_ Certification: NONE _x000D_ Origin: Mainland China _x000D_ Model Number: Welding Machine Control Board _x000D_ Weight: 180 g _x000D_ Material: Printed Circuit Board _x000D_ Working voltage: 8-24V _x000D_ Working current: 20mAh _x000D_ Peak welding current: maximum 2400A _x000D_ Standby power consumption: 0.5mAh _x000D_ Welding thickness: 0.1-0.2mm _x000D_ Extreme temperature: 175 _x000D_ Item size: 89x54mm/3.50x2.13 inches _x000D_ You can choose one of the following power sources as the working power source: _x000D_ 1. Lead acid battery: 2 * 20Ah electric vehicle battery, 36-405H new car starting battery. _x000D_ 2. Model battery: 3S 4000mah 35C, 3S 5000mah 25C, 3S 8000mah 20C. _x000D_ 3. Car starting power supply: 11.5-14.8V 36-60AH, internal resistance should be>2.5 milliohms and