Feature: 1. This battery spots welding machine is perfect for welding batteries, as well as 0.1mm~0.3mm nickel-plated sheets. 2. Portable, stable, and reliable, this welding machine is built to last. 3. Supports 30 speed output power regulation, making it more controllable. 4. 0.96in LCD display, more convenient in use. 5. USB rechargeable design, and large capacity battery for long working time. 6. The battery indicator light reminds you to recharge in time. 7. The welding nib can be disassembled and replaced, and the welding points are beautiful and firm. 8. Portable size for easy carrying. Specification: Main color: black Output voltage: maximum 8.4V Output current: maximum 400A Battery: 3.7V, 11000mAh Nickel plated sheets welding thickness: 0.1-0.3mm Item size: 131 * 98 * 56mm / 5.2 * 3.9 * 2.2in Item weight: 591g / 1.3lb . Package List: 1 * Welding Machine 1 * User Manual 2 * Welding Pen 1 * Cable 1 * Nickel Sheet 2 * Welding PenNibs