Item Type: Mini Spot Welder_x000D_Type C Input: 5V 2A_x000D_Maximum Output Voltage: 4.2V_x000D_Output Maximum Instantaneous Current: 650A_x000D_Battery: 2 x Polymer lithium battery 5000mah_x000D_Applicable: _x000D_1. 18650 and other cylindrical lithium batteries, nickel hydrogen batteries, nickel cadmium batteries, etc._x000D_2. Mobile phone battery cells, spot welding_x000D_3. Stainless steel sheets with a thickness of no more than 0.12mm 1ALL IN ONE SPOT WELDING PEN: Adopt gold plated pen tip and copper pen barrel, copper oxide aluminum welding needle, grasp every detail, only for your experience 2THICKENED AND WEAR RESISTANT: 2MM thick copper over current bar with ultra low internal resistance increases over current capability, gold plated soldering pen terminals are made of copper and gold plated technology, wear resistant and rust proof, with ultra low internal resistance 3TEMPERATURE CONTROL PROTECTION: Automatic power off when the temperature exceeds 60. The portable spot welding machine has perfect overcharge, overdischarge, overtemperature and other protection functions and double protection performance. Unique overheat protection device, automatic power off when overheated 46 SPEED ADJUSTABLE: 6 speed output power is adjustable, welding is more accurate and stable. Automatic and manual modes are adjustable for easy operation 5WIDE APPLICATION: Suitable for 18650 and other cylindrical lithium batteries, nickel hydrogen batteries, and cadmium nickel batteries, and can be welded firmly. Can also be used to weld iron, steel, stainless steel plates with thickness less than 0.2mm/0.007in to other iron, steel, stainless steel materials. Saving your time and effort 1 x Host 2 x Welding Pen 1 x File 1 x Nickel Sheet 3 x Board 1 x User Manual