24-Pack 3mm Alumina Copper Spot Welding Needles for Battery
24-Pack 3mm Alumina Copper Spot Welding Needles for Battery
24-Pack Alumina Copper Spot Welding Needles – 3mm Eccentric Rod for Battery Nickel Strip Welding
Upgrade your battery spot welding setup with these professional-grade Alumina Copper Welding Needles. Engineered from high-quality aluminum oxide copper (alumina copper), these 3mm eccentric-rod welding pins deliver consistent, clean welds on nickel strips and nickelized steel sheets — making them an essential consumable for battery production workshops and DIY battery builders alike.
Made in Mainland China.
Key Features
- Prevents Electrode Sticking: Advanced alumina copper composition minimizes electrode adhesion during repeated spot welds.
- Clean, Beautiful Weld Points: No yellowing at the weld site — each weld point is neat and professional.
- Eliminates Virtual (Cold) Welds: Reliable contact ensures solid, fully fused weld joints every time.
- No Weld Spatter: Dramatically reduces sparking and spatter for a safer, cleaner working environment.
- Excellent Conductivity: Superior electrical and thermal conductivity for efficient energy transfer during spot welding.
- Good Thermal Stability & Plasticity: Maintains performance under repeated high-heat welding cycles.
Specifications
- Material: Alumina Copper (Aluminum Oxide Copper)
- Diameter: 3mm
- Length: 40mm
- Color: Copper
- Quantity: 24 welding needles per pack
Applications
These welding needles are especially suited for spot welding in battery production, including:
- Nickel strip and pure nickel band welding
- Nickel-permeated (nickelized) steel sheet welding
- Coated steel strip welding in battery assembly
- Ni-MH, Ni-Cd, polymer, and lithium battery production
- Welding spot welding connectors, battery cores, and lead-out sheets
Package Contents
- 24 × Alumina Copper Welding Needles (3mm, 40mm length)
Looking for other precision welding and workshop tools? Check out our 48-Pc MIG Welding Nozzle & Tip Set – MB15 AK15 Torch and our 10-in-1 Multi-Functional Bone Wrench Hex Socket Spanner for your repair and assembly needs.
Note: Due to lighting conditions and display variations, the color in product images may appear slightly different from the actual item. Measurement tolerance: ±1–3mm.
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: What material are these welding needles made from?
A: These welding needles are made from alumina copper (aluminum oxide copper), which provides excellent electrical conductivity, thermal stability, and resistance to electrode sticking — ideal for high-frequency battery spot welding applications.
Q: What battery types are these alumina copper welding needles compatible with?
A: These 3mm spot welding needles are compatible with a wide range of battery production applications, including Ni-MH, Ni-Cd, polymer, and lithium battery manufacturing, as well as general nickel strip and nickelized steel sheet spot welding.
Q: How many welding needles are included in the pack?
A: Each pack contains 24 alumina copper welding needles, each measuring 3mm in diameter and 40mm in length, providing ample supply for extended production runs or workshop use.
Q: Will these needles fit my existing spot welding pen or machine?
A: These welding needles feature a standard 3mm eccentric rod diameter, designed to fit most compatible spot welding pens and machines that accept 3mm welding electrodes. Please verify your machine's electrode size before ordering.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.