Portable Welding Machine:Portable Spot Welding Machine is mainly used in the welding of nickel sheet of cylindrical battery like 18650. Built-in high-rate polymer cell, the maximum output current is up to 650A.Durable Materials:Aluminum alloy shell material, fire-proof and anti-fall; Surface technology, anti-abrasive and safe to useIt can continuously weld thousands of points after being fully charged.Charging Indicator Light and Portable:Has four dual-color indicator lights, Green light for indicating the , red light for indicating the welding . Red for charging, green for fully charged. It will automatically shut-down after 15 minutes of no use.Output :9 gears of output adjustable, welding more accurate. Use for cylindrical battery, NI-MH battery, nickel cadmium battery welding. It is recommended to practice hands with iron cans first, and then solder the battery after getting familiar with the welding machine.High-quality Spot Welding Pen:Integrated welding pen use gold-plate terminal, with good conductivity and low contact , quickly detachment and easy carring.9 levels of adjustable2A high current charging, fast charging speed bank USB output function (5V MAX24A)Replaceable soldering needles, one-piece soldering pen, soldering will not be hotProgram update, more user-friendly operationUpgradeable firmwareColour: blackMaterial: aluminum alloySize: 10x84x28cmPackage Contents:1 * Welding Machine2 * Welding Pen1 * Charging cable1 * 2m nickel platedOnly the above package content, other products are not included.Note: Light 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.