1、Specifications: Portable battery spot welder, with 4.2V output voltage, 800A output current, support 99 gears power, manual and automatic dual modes; Detachable soldering pin, easy and fast to operate 2、Portable Design: This spot welder is handheld, making it easy to carry around. It combines built in power supply with welding pen, allowing for easy welding without the need for an external welding pen 3、Wide Application: This spot welder is suitable for 26650 36650 cylindrical battery, mobile phone battery, and other electronic devices that require battery, for repairing and replacing electronic device battery 4、Versatile Use: With powerful 99 gears power output, it ensures accurate and controllable welding to meet different materials and thickness, suitable for ni plating sheet welding from 0.10mm to 0.25mm thickness 5、Strong and Efficient: This battery welding machine features dual pulse design with strong output, ensuring firm welding and rounded solder joints, providing seamless welding results and improving work efficiency Item Type: Battery Spot Welder Product Material: ABS Display Screen: 1.33 inch TFT Color Screen Battery: Lithium Cell 3000mAh (Built in) Output Voltage: 4.2V Output Current: 800A Charging Input: 5V 1A 1 x Spot Welder 2 x Copper Needles 1 x Sandpaper 1 x Ni Tape Roll 1 x Charging Cable 1 x User Manual