Note: Do not use switching power supplies, transform, chargers, supply power to the spots welding machine, as it may damage the control circuit of the spots welding machine Do not supply voltages exceeding 15V Communication: XH2.54-4P, TTL 3.3V output, 5V power output, providing a most current of 500mA Soldering pen wire: 10mm² clear flexible copper wire, copper pen body, quick-changes pen tip, compatible for 3mm diameter soldering pins, and most supported length is 100mm Recommended power supply: 12V car battery ( 20AH-75AH), car starting power supply ( starting boosters), 2-4S battery, 2-3S super capacitor, ( The charging voltages of 4S capacitor is about 9V), 2-3S high rate model battery ( without protections plate) or single cell battery; Spots welding current: 6low-resistance 600A current MOSFETs, the welding spots current can reach 2600A External temperature interfaces: universally 10K thermistor ( B3950 model), XH2.54-2P connector, Manufacturer: ERRORY