1、This product supports 0.1-0.12 nickel spot welding, which is saving time and effort. 2、6‑speed output power is adjustable, welding is more accurate, with Tуpe‑C port 2A input, spot welding machine charging faster. 3、Suitable for 18650 and other cylindrical lithium batteries, nickel-hydrogen batteries, nickel-cadmium batteries, etc. 4、One customized spot welding pen, gold-plated pen end and copper barrel, easy to use. 5、With temperature control protection, the power will be cut off automatically when the temperature exceeds 60℃. 6、2mm thick pure copper flow bar, ultra-low internal resistance increases flow capacity. Item Type: Spot Welding Machine Product Model: Upgraded Portable Spot Welder Battery Type: Rechargeable polymer lithium battery Battery Capacity: 6700mAH Output Voltage: 4.2V (Maximum) Output Current: 650A (Maximum) Design Current: 1000A (Maximum) Input Interface: Type-C charging port Input Parameters: 5V/2A Recommended Nickel Strip Thickness: 0.1-0.12mm How to Use: 1. Confirm that the spot welding pen is connected to the spot welding machine; 2. Confirm that the thickness of the nickel sheet we sent is within 0.12mm; 3. Confirm the battery power, if the battery power is extremely low, the welding may not be firm; 4. Make sure that the welding place of the battery is clean, if it is dirty or has been welded, the welding may be weak; 5. Confirm the operation method. When spot welding, the spot welding needle may be close to the near point. Don't press the welding needle too hard, just put the nickel sheet and the battery welding place near to each other; 6. Confirm whether the wire of the spot welding pen and the spot welding pen are tightly matched, and gently pull the wire and the spot welding pen. If there is looseness, the spot welding pen and the wire are not tightly matched. 1 x Spot Welding Machine 1 x Welding Pen 1 x Nickel Sheet 1 x USB Cable