Versatile power options The welding power can be supplied from a lithium battery or a 12V car battery, enabling operation in workshops, in the field, or in vehiclemounted setups. This flexible power compatibility reduces downtime and increases portability without relying on a fixed mains supply. Efficient design The soldering pen and input wire are connected by U shaped cold pressed terminals, allowing quick disassembly and easy replacement of parts. This design simplifies maintenance, minimizes downtime, and improves serviceability. Automatic or manual mode The controller offers an automatic welding mode for consistent results and a manual trigger interface for direct control when precision or timing matters. This dual mode supports a range of welding tasks and user preferences. Sturdy and stable The power board uses 2 ounces of copper and 10 AWG multi wire soft wire to support overcurrent conditions, delivering reliable current performance. 300 A MOS tubes, driven by dedicated chips, enable fast, safe switching and stable operation. Applications and scenarios Field or roadside metal : Use with a lithium battery or car battery to perform patch welding on panels, brackets, or structural metal without access to mains power. Workshop portability: In small shops or mobile setups, the unit provides portable welding capability for quick fixes and fabrication tasks where a mains outlet is unavailable. Automotive and equipment maintenance: Ideal for onvehicle repairs, brackets, and chassisrelated welds, offering reliable current delivery and control in automatic or manual modes.