Feature: 1.This lithium battery spot welding machine can also be used as a short circuit detector and as a portable fast charging power bank. 2.With adjustable output power, the 1st to 7th level is the battery spot welding function, the 8th level is the burn in function, easy to adjust. 3. Equipped with quick disassembly solder point pen, with gold plated terminal, oxidation resistant and durable, easy to operate and carry. 4. Equipped with 2pcs 5000mAh lithium polymer batteries, which are portable rechargeable and can be used as mobile power source. Specification: Item Type: Portable Spot Welder Charging Time: 3 hours Output Voltage: 4.2V (Maximum) Output Current: 650A (Maximum) Burn In Output: 150A (Maximum) Recommended Nickel Strip Thickness: 0.1-0.2mm Battery: Polymer lithium battery x 2 5000mah (with built in battery) Scope of Application: Suitable for the replacement and welding of small battery boards, and supports the welding of 18650 lithium battery nickel sheets; it solves the problems of welding of copper and aluminum materials that cannot be welded, and the problem that the power of non mobile phone special design is too large, and it is easy to break down the battery protection chip. Package List: 1 x Portable Spot Welder 2 x Spot Welding Pens 2 x Test Lead Wires 1 x Nickel Sheet 1 x Data Cable 1 x User Manual 3 x Accessories