1. 99 gear power adjustable, digital tube real-time display gear 2. Real-time voltage monitoring protection, if the voltage is not in the range of 8-17V, UE is displayed 3. Real-time MOS tube temperature protection. When the MOS tube temperature exceeds 45, is displayed 4. Using 5 MOS tubes, spot welding current up to 1500A 5. 10AWG wire, alumina copper spot welding needle, high current passing capacity and durability<br><br>Pure copper conducts heat and improves spot welding efficiency. Product model:Z99 Operating voltage:12V Working current:100-300A Standby power consumption:Less than 0.5ma Thickness of welded nickel sheet:0.1-0.3mm(related to battery ratio) welding current:1500A MAX Voltage requirement:25AH-60AH or high rate battery above 30C Note:Due to different production batches, the colors and styles of accessories are random and cannot be specified. Colour:As Shown Material:ABS<br><br>Package Contents: 1 set * DIY spot welding machine<br><br>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.