FNIRSI® SWM-20 1200A Dual-Pulse 2-In-1 Portable Battery Spot Welder

The FNIRSI® SWM-20 1200A Dual-Pulse 2-In-1 Portable Battery Spot Welder is a high-efficiency handheld tool that combines dual-pulse spot welding technology with a built-in power bank function. A 2.4-inch TFT color display presents real-time voltage, temperature, and welding parameters, while a rotary encoder knob enables quick, precise adjustments. Dual-pulse welding uses a primary pulse to remove oxide and a secondary pulse to produce cleaner, more reliable welds. Key Features 1200A Peak Current for powerful, consistent welds. Wide Material Compatibility (0.1–0.5 mm) including nickel-plated steel, steel, pure nickel, iron, and copper/nickel-plated copper within specified thickness limits. 10,000+ Ultra-Fine Adjustment Levels for precise power control. Fully Adjustable Welding Parameters including preheat, pulse, interval, and continuous welding points. Dual A-Grade 5000mAh Battery Cells and up to 1,500 welding cycles per charge under stated conditions. 2-in-1 Functionality: spot welder and 5V/2.1A USB power bank with Type-C charging. Detachable 99.9% Pure Copper Welding Pens for high conductivity and heat dissipation. 8-in-1 Smart Safety Protection System covering over-temp, undervoltage, overcharge, over-discharge, short-circuit, voltage stabilization, low-temp, and impact protection. Specifications Battery Capacity: 5000mAh. Charging/Discharging: 5V / 2.1A. Welding Thickness: 0.1–0.5 mm. Max Welding Current: 1200A. Level: 4 preset combination levels. Package List SWM-20 host, welding pens, replacement tips, USB-C cable, nickel strip, and user manual.