on nickel sheet and nickel-plate sheet.Easy to Use: Long press the rotary encoder to on/off the machine. Use the rotary encoder to adjust the welding gear (the number is flashing) click the encoder to confirm, the display is a long bright state at this time can be used to welding.Support Spots Welding Battery Type: Support for welding 32650/26650/18650/18500/17490/14650 and other cylindrical lithium batteries, NiMH batteries, etc., can be welded firmly.Support Nickel Sheet Type: Support for welding nickel sheet with the thickness of 0.1mm-0.3mm, and with solid and beautiful welding spots.Superior Welding Pen: Dedicated spots welding pen, 6 square soft silicone wire are consists of multiple strands of high-temperature wire with high torsional resistance and more sensitive operation.Copper Needle Design: With alumina copper spots welding needles, large contact areas with pure copper joints to reduce internal resistance, to ensure high current passing capacity and durability.Available Power Sources: 2.7V 3000F superFaraday capacitor in series with 3 charged to 8V can be welded (he maximum number of Farad capacitors is no more than 4 in series)Forbidden Power Supplys: Switching power supplys, transformers, rechargers, rechargeable battery.Note: The firsttime you use it, please starts debugging from 1 gear, slowly upward gear, adjust to the appropriate gear to not arbitrarily increase the gear, to avoids irreversible damage to the motherboard by using too large gear.Specifications:Name: Spots Welding Machine SetMaterial: printed circuit boardNickel sheet welding thickness: 0.1-0.3mmPackage size: 150 * 100 * 60mm / 5.91 * 3.94 * 2.36inPackage weight: 450g / 0.99lbPacking List:1 * Control Board2 * Input Cable1 * Pair of Welding Pen4 * Screw Set