Description: The compact size and light weight design makes it easy to carry, and the equipped quick release soldering pen is comfortable to grip. The large capacity battery supports long time operating, and it is stable and reliable, wear-resisting and labor-saving. The intelligent micro-computer control system makes it practical and easy to use. Made of high-quality aluminium alloy, the sopt-welder is durable and sturdy. The product is 10.3cm long, 8.4cm wide and 2.8cm high. The nickel sheet is 100cm long. This handheld spot-welder is mainly used in the welding of cylindrical battery like 18650 battery. Item Name: Spot-welder Material:Aluminum Alloy Batteries: 2 x Rechargeable Batteries 4300mAh (Included) Charging Time: About 4h Input Voltage: 5V Output Voltage: 4.2V Maximum Output Current: 639A Maximum Input Current: 1A Charging Interface: 1: Micro-USB, 2: Type-C Wielding Thickness: 0.1mm-0.12mm Constant Current: 300A Design Current: 1200A Maximum Size Details: Product Size: 10.3cm x 8.4cm x 2.8cm(Approx.) Nickel Sheet Length: 100cm(Approx.) Notes: Notes: Instructions: 1. Long press the power button, the green light shows the battery level, and the red light shows the output power. 2. Short press twice to enter the power setting, 4 gears power output, short press twice to save and export. 3. At this time, the welding will be triggered at a fixed time of 1.5s. 4. Short press to switch to automatic trigger mode, it will automatically output when two soldering pens are in good contact with the nickel plate. 5. Long press to close. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X USB Cable 2 X Soldering Pens 1 X Nickel Sheet 1 X Spot-welder