1. 99 adjustable power levels, with real-time display of gear levels on digital tubes 2. Real time voltage monitoring protection, if the voltage is not within the range of 8-17v, display ue 3. Real time mos tube temperature protection. If the mos tube temperature exceeds 45 , ce will be displayed 4. Using 5 mos transistors, the peak current of spot welding can reach 1500a 5. 10awg wire, aluminum oxide copper spot welding needle, ensuring high current carrying capacity and durability 6. Pure copper conducts electricity and heat, improving spot welding efficiency Parameters: Product model: a99 Working voltage: 12v Working current: 100-300a Standby power consumption: Less than 0.5ma Welding nickel plate thickness: 0.1-0.3mm (related to battery rate) Welding peak current: 1500a max Voltage requirement: 25ah-60ah or 30c or higher high rate battery Colour:As Shown Material:plastic Package Contents: 1 * moudle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.