Automatic Spot Welder with 4 Power Levels for High-Efficiency DIY & Professional Battery Pack Welding

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Features: This spot welder utilizes rapid local heating and cooling of high current for efficient and precise spot welding, also known as butt welding or contact resistance welding . Automatically triggers welding, making it ideal for both DIY enthusiasts and professional welders. Compatible with various battery packs including 12V car starting power supplies, model aircraft 3S high-rate battery packs, high-rate lithium battery packs, Hitachi 409003 string battery packs, and durable 12V 20A lead-acid batteries. Equipped with a control panel that allows easy switching between 4 power levels with a simple 3-second long press. A green light pulse output indicator and a buzzing sound signal each spot welding output. Designed to be portable, stable, reliable, and durable, ensuring a long lifespan and excellent welding performance. Specifications: System Voltage: 12-14.6V Working Current: 90-150A Recommended Battery: 20-45Ah lead-acid battery with good performance and low internal resistance, 3.5-5.5Ah 45C 3S Lithium battery pack for model aircraft, 30-35Ah Rongli type 18650 battery pack Note: Requires a self-provided 12V battery for power supply. Package Includes: 1 x Spot Welder PCB Circuit Board 1 x User Manual 1 x Control Panel Show more