1SAFE AND PORTABLE: This spot welding machine offers excellent electrical conductivity, strong torsion resistance, low contact resistance, and is safe for use. Its mini portable design makes it easy to carry. Despite its small size, it is feature-rich to fulfill your diverse battery pack assembly requirements.2SUPPORTS 0.10-0.25MM NICKEL SHEET: When fully charged, this rechargeable mini spot welder supports 0.25mm nickel sheet welding, saving you time and hassle.3APPLICABLE SCENARIO: This DIY spot welding machine is primarily designed for welding nickel sheets for cylindrical batteries, nickel metal hydride batteries, and nickel batteries (such as 18650).4POWER SUPPLY INFORMATION: The mini spot welder comes with a 5000mAh rechargeable polymer lithium battery and a Type C charging cable, which can be fully charged in just 3 hours. The 2.4A fast charging feature also allows it to function as a mobile power bank to charge your phone, providing dual usage. With low power consumption, it can remain in standby mode for up to one year. It includes low power protection, automatic shutdown, and other functionalities.580 LEVEL ADJUSTABLE OUTPUT: The spot welding machine offers an 80-level adjustable output power, allowing customization based on your specific needs. The 180-level fine adjustment makes welding more precise and enhances the spot welding outcome.6HD DISPLAY: This portable spot welder features a reversible screen with a clear display, enabling you to monitor the remaining battery, delay time, temperature, and power level at a glance, providing clarity on the product's working status. The default language is English, with the option to change it as required.