Portable 5 Gears DIY Mini Spot Welding Machine for 18650 Lithium Battery Adjustable Spot Welder with Nickel Sheet Power Bank Welding Tool Kit Feature: 1. Automatic trigger, detachable soldering pen, Type-C charging, short circuit protection Design: Sturdy appearance, anti-light splash, firm connection, scattered soldering pen, service life of 50,000 cycles. 2. 0.1 smm nickel bar welding force, steel shell 18650 battery assembly. For large monomers, the aluminum electrode must be welded after it becomes nickel, and the welding point is about 800 points. 3. Support welding when charging. In theory, the battery life is unlimited, and the battery capacity is about 5Ah. 4. Lithium battery protection. This product uses ultra-high rate lithium battery as the power source, which has a larger discharge current than ordinary batteries. From 50% storage protection, to improve the better protection strategy of charging 4.2V instead of 4.25V, the new version of the charging current is 2.1A, welding and charging can be carried out at the same time, two hours of extremely fast charging, built-in smart power bank system, automatic detection of USB devices Plug and unplug, automatic power supply and power off. 5. Low voltage protection The working voltage platform of the power file battery is narrower than that of the ordinary K battery. The welding machine adopts a protection strategy lower than 3.2V, leaving space for low voltage and ensuring safety. 6. Low power consumption function Long press to open/close, short press to switch 5 levels, all operations can be executed quickly and concisely. When it is off, it can stand by for up to one year due to its low power consumption function. 7. Thermal optimization This product uses 2 ultra-high-rate model aircraft batteries, the discharge crest value can reach 630A + all high-current wiring, and infrared thermal imaging is used to optimize the design to better distribute the discharge current. 8. Unique secret: short circuit protection of the soldering pen. Specification: Material: Hard aluminum alloy Packing size: 11cm*8.5cm*3cm Battery capacity: 5000mAh Design: 35cm lengthened welding wire, dispersion copper welding pen Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement.                                                         1 X Spot Welding Machine Host 2 X Brass Soldering Pen 2 X Soft Silicone Wire 1 X Type-C Charging Cable 1 X 4m Nickel Sheet