【Upgraded LCD Screen】The spot welder is made of high quality aluminum alloy material with anodized welding machine surface, which is wear-resistant and fireproof to use.The newly improved LCD screen can clearly see the charging status, remaining battery, gear level, delay, current and voltage, real-time board temperature monitoring, high temperature reminder, sound settings, spot welding counting and automatic power off, etc. The brightness of theBacklight is 5-100.0% and can be adjusted according to the environment. 【30 Gears Adjustable & Double Pulse】Mini spot welder with 80 gears adjustable output power, can meet more professional welding needs.Very good Adjustments can make welding more precise and spot welding effect more perfect. Mainly used in welding nickel fins of battery, which can be used for welding cylindrical points of nickel and nickel-cadmium batteries, etc. 【Built-in 5000mAh Battery】Portable spot welder with 5000mAh battery and Type-C charging cable, can be fully charged within 2 hours.After fully charged, it can weld thousands of points continuously.Supports 2.4A fast charging. Built-in cell with a maximum output current of up to 650A. After fully charged, theoretically thousands of points can be soldered continuously.It can also be used as a power bank if you need to charge while traveling or on the go 【Intelligent and safe to use Protection function】This machine is equipped with short circuit protection to monitor every soldering point.Overshoot protection, over-discharge protection, over-voltage protection, over-current protection, over-current protection, temperature protection.Smart and safe to use: When the working temperature is higher than 60°C/140°F, spot soldering will automatically stop to avoid damage to workers and property 【Wide Application】Spot welding machine, suitable for cylindrical lithium batteries, nickel metal hydride batteries and cadmium nickel batteries.It can also be used for welding nickel sheets with a thickness of less than 0.2mm and welding stainless steel sheets and stainless steel sheets with a thickness of less than 0.15mm.Premium soldering pin, 8AWG wire is composed of multiple high temperatureWire connections, with higher resistance and more sensitive operation.Thick gold plated interface with aluminum oxide copper solder pins to ensure high current carrying capacity and durability.