The DIY Copper Spot Welding Pen Kit is a high-conductivity handheld welding accessory designed for building or upgrading spot-welding machines used in battery pack assembly. Equipped with pure copper welding rods, heat-resistant silicone wires, and a dedicated PCB connection board, this kit provides stable current delivery and precise welding performance for lithium battery tabs (18650, 26650, etc.).

This accessory is perfect for hobbyists, battery pack builders, and DIY spot-welder projects where high current, durability, and ease of use are essential.

Features:

1. Pure copper welding tips for excellent conductivity
2. Heat-resistant, anti-aging silicone wires
3. High-current PCB board for stable and safe operation
4. Suitable for DIY spot welding machines and battery pack assembly
5. Smooth and precise welding performance
6. Durable materials for long service life
7. Includes mounting screws and hardware for easy installation
8. Compatible with 18650, 26650, and other cylindrical battery types

Specifications:

• Material (Welding Tips): Pure Copper
  
• Suitable for 3.7V to 12V battery DC spot welding machine to be used by electric welding machine
• Wire Type: High-temperature silicone wire
• PCB: Dedicated high-current welding PCB
• Compatibility: 18650 / 26650 / 21700 battery nickel strip welding
• Wire Length: Standard length
• Current Handling: Supports high-pulse discharge from spot-welder modules
• Mounting Hardware: Included (screws and nuts)
• Suitable for 3.7V to 12V battery DC spot welding machine to be used by electric welding machine
• Application: Portable spot welders, DIY welding machines, battery pack repairs

Package Includes:

1 × DIY Copper Spot Welding Pen (with wires)

1 × High-current PCB connection board

4 × Mounting Screws

4 × Hex Nuts