Integrated Design: Battery spot welder power supply and welding pen are combined into one, you can weld easily without an external welding pen. The mini welder is designed for one-handed operation. freeing your other hand to hold the nickel strip, making welding a breeze.This cordless spot welder is only suitable for small battery nickel sheets. LCD Digital Display: The Spot Welder comes with a digital display , and its functions include mode selection, gear setting, preheating time, and delay display. Click the SET button to trigger the settings of language, sleep time, screen brightness, etc. Dual Modes and 99 Adjustable Gears: The handheld spot welder adopts allow you to freely choose the output power to meet your spot welding needs; the design of automatic and manual modes increases the flexibility of spot welding, dual pulse output, and more precise welding.Switch between modes effortlessly for seamless welding experiences Multifunctional Spot Welder: Portable spot welder is very suitable for welding electronic devices that fail due to battery damage and various types of batteries, such as cylindrical batteries, button batteries etc. And support welding nickel-plated sheets, stainless iron sheets or stainless steel sheets, and the solder joints are firm and beautiful Safety and Reliable: Professional Spot Welding Machine adopts a multi-protection design and has an intelligent temperature detection system built in. When the device temperature is detected to be higher than 65 degrees, the device will automatically power off and stop spot welding, making your spot welding more secure