1. High definition large screen display: 1.8-inch color screen display, clear parameters at a glance, interface can be flipped 180 ﾰ 2. Detachable soldering pin: using a 10 square meter integrated soldering pen wire and connecting wire to reduce wire resistance and optimize soldering effect 3. Six MOS transistors: 600A higher power, optimized circuit to improve heat dissipation effect, and increased current passing limit 4. Rich expansion interfaces: integrated welding pen, foot switch, Bluetooth APP or external control interface NTC 5. Selection of working power sources: supercapacitors, high rate lithium batteries, car batteries, car starter kits, etc Product Parameters: Working voltage: DC 3.6-15V Recommended power sources: 12V car battery 20AH-75AH, car emergency start battery (starter power), 2-4S high rate lithium iron phosphate/ternary lithium battery, 2-3S super Farad capacitor (4S capacitor charging voltage around 9V), 2-3S high rate model aircraft battery (without protective board) or battery cell Material thickness: 0.4mm nickel strip/steel strip (MAX), 0.2mm copper sheet stacked welding nickel strip (MAX), 0.25mm pure nickel strip (MAX) Spot welding current: 6 low internal resistance 600A high current MOS tubes, pen tip current can reach 3000A Power input cable specification: 10 square transparent soft purple copper wire, SC purple copper plated copper nose at both ends Welding pen wire specifications: 10 square transparent soft purple copper wire, purple copper pen body,quick replaceable needle tip. Foot switch interface: standard DC5.5-2.1 seat, the most commonly used interface, can be connected to a foot switch and an integrated handheld spot welding pen External temperature interface: most commonly used NTC-10K, B3950 thermistor, XH2.54-2P interface Color: As shown