1. Using 5 MOS tubes, the maximum current can reach 2390A. High-power output design, 99-speed adjustable output power, more precise welding, thousands of points can be continuously welded on nickel sheet/nickel plate.2. Welding is the principle of using high current and high temperature to rapidly melt the nickel foil and cool it.3. Equipped with 2 copper bars, which greatly increases the overcurrent capacity.4. The welding point is accurate and beautiful, and supports welding of 0.05-0.3mm nickel sheet, iron sheet and stainless steel sheet.5. The spot welding machine can be used for spot welding of 14650/17490/18650/21700/26650/32650 lithium cylindrical batteries and NiMH batteriesSpecification:Product name: spot welding machineGear: 99 gearsDisplay: digital tube displayVersion: Lead-acid battery versionSpecifications: 10 square pens+ protective case10 square pen can spot weld 0.05-0.3mm nickel plated sheetControl board working voltage: 9-16VWorking current: about 90-180ALead-acid battery version is suitable for:----Old lead-acid battery 12V20AH--100AH (new battery can not exceed 45AH) 20AH can not exceed 1 year, more than one year needs a larger capacity.----or: 4-5 strings of super Farad capacitors----or: large cell (iron-lithium battery)Material: PCB+Metalcolour: PurplePackage Contents:1 x Control panel2 x spot welding pen2 x input line2 x heat shrink tube1 x screw pack1 x Nickel sheet1 x Acrylic shellOnly the above package content, other products are not included.Note: Light shooting 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.