3MM Copper Oxide Spot Welding Needles – 18650 Battery Electrodes
3MM Copper Oxide Spot Welding Needles – 18650 Battery Electrodes
3MM Copper Oxide Double-Head Spot Welding Electrode Needles
Upgrade your battery spot welding setup with these high-quality 3MM Purple Copper Oxide Electrode Needles. Designed specifically for use with 18650 power batteries, these double-head welding needles deliver consistent, reliable electrical contact for clean and precise spot welds every time. Available in convenient packs of 2, 5, or 10 — stock up and keep your workbench ready.
Product Specifications
- Material: Copper (Copper Oxide finish)
- Color: Purple (Copper Oxide)
- Size: 3 × 50 mm
- Tip Style: Double Head
- Compatible With: 18650 Power Batteries & Standard Spot Welders
- Package Quantity: 2 / 5 / 10 Pieces
- Country of Origin: Made in China
Why Choose These Electrode Needles?
- ✅ High Conductivity Copper Core — ensures efficient energy transfer for strong, consistent spot welds
- ✅ Copper Oxide Surface — enhances durability and reduces electrode wear over extended use
- ✅ Double-Head Design — maximizes contact surface area for balanced welding performance
- ✅ Precision-Sized at 3×50mm — fits standard 18650 battery spot welding machines
- ✅ Multi-Pack Options — choose the quantity that best suits your project needs
What's in the Box?
2, 5, or 10 × 3MM Purple Copper Oxide Double-Head Spot Welding Electrode Needles (as selected at checkout)
Important Notes
Please allow a 2–3% dimensional tolerance due to manual measurement. Actual product color may vary slightly from images due to differences in monitor display settings.
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Frequently Asked Questions
Q: What spot welding machines are these 3MM copper oxide electrode needles compatible with?
A: These 3MM double-head copper oxide electrode needles are designed for use with standard 18650 power battery spot welders. Their 3×50mm dimensions make them compatible with most common portable and bench-top spot welding machines used for 18650 lithium battery pack assembly and repair.
Q: Why are copper oxide electrode needles better for spot welding?
A: Copper oxide electrode needles combine the excellent electrical conductivity of copper with a hardened oxide surface layer that resists wear and extends the lifespan of the electrode tip. This makes them ideal for repeated spot welding tasks on 18650 battery cells, providing cleaner welds and longer-lasting performance compared to bare copper tips.
Q: How many electrode needles do I get, and can I buy more at once?
A: These electrode needles are available in packs of 2, 5, or 10 pieces — simply select your preferred quantity at checkout. Buying a larger pack is a great way to ensure you always have spares on hand for continuous welding projects or battery pack builds.
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.