Features: Compact size, lightweight and portable, easy to carry around with you. 6 gears of power adjustable, the welding process is more accurate and the welding effect is more perfect. With temperature control protections function and it will automatic power off after 5 minutes no operation. It can be used as recharge pal, USB interface and the max output current is 2.4A. This spot-welding machine can be used to spot-welding cylindrical lithium batteries, like 18650 battery. Also supports welding nickel mobilephone battery, compatible with various of mainstream mobilephones. The welding spots are accurate and beautiful, support welding 0.1-0.12mm nickel sheet. Built-in 9600mAh high capacity battery, the maximum output current is more than 650A, it can continuously weld thousands of points after being fully recharged. Comes with quality welding pen, with fine conductivity and low contact resistance, quickly detachment and easy carrying. Specifications: Name: Spot Welding Machine Material: aluminum alloy Battery: 1 * 4.2V, 9600mAh battery (included) Output voltage: max 4.2V Output current: max 650A USB output: max 5V, 2.4A Micro USB input: 5V 2A Recommended nickel sheet: 0.1-0.12mm Item size: 112 * 85 * 25mm / 4.41 * 3.35 * 0.98in Package size: 155 * 100 * 45mm / 6.10 * 3.94 * 1.77in Package weight: 420g / 0.93lb Packing List: 1 * Spot Welding Machine 2 * Spot Welding Pen 1 * USB Cable 1 * Roll of Nickel Sheet