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2PCS 3mm Spot Welding Needle Tips – Aluminum Oxide Copper 18650
2PCS 3mm Spot Welding Needle Tips – Aluminum Oxide Copper 18650
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2PCS Aluminum Oxide Copper Spot Welding Needle Electrode Tips – 3mm for 18650 Battery Welders
Upgrade your battery assembly workflow with these precision-crafted aluminum oxide copper spot welding needle electrode tips. Designed specifically for handheld spot welders used in 18650 lithium battery pack production, these 3mm tips deliver consistent, reliable welds on a wide variety of strip materials. Made in Mainland China.
Key Features
- Premium Aluminum Oxide Copper Material: Combines the superior conductivity of copper with the hardness of aluminum oxide for exceptional durability and long service life.
- Double-End Design: Both ends are precision-machined and usable, effectively doubling the working life of each needle — simply flip and keep welding.
- Ideal for Battery Assembly: Perfect for spot welding nickel strips, nickel-infiltrated steel strips, and galvanized steel strips commonly used in NiMH, NiCr, polymer, and lithium battery cell assembly.
- Precise Dimensions: Each needle measures 50mm in length and 3mm in diameter, fitting standard handheld spot welder pens and electrode holders.
- Wear Resistant: Engineered for repeated high-current use, maintaining tip integrity through extended welding sessions.
- Value Pack: Comes as a set of 2 welding needle tips — always have a spare on hand.
Specifications
| Material | Aluminum Oxide Copper (Cu-Al₂O₃) |
| Needle Diameter | 3 mm |
| Needle Length | 50 mm |
| Quantity | 2 Pieces |
| Compatible With | 18650 Handheld Spot Welder Pens |
| Country of Origin | Made in Mainland China |
Compatible Welding Applications
These electrode tips are well-suited for spot welding the connecting pieces, battery cells, and lead-out tabs in the production of:
- 18650 Lithium Battery Packs
- NiMH (Nickel Metal Hydride) Batteries
- Ni-Cr (Nickel Chromium) Batteries
- Polymer / LiPo Battery Packs
Package Contents
✅ 2 × Aluminum Oxide Copper Spot Welding Needle Electrode Tips (3mm × 50mm)
Note: Due to differences in monitor calibration and manual measurement methods, slight color and dimension variations may occur.
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For more information on safe electrical and welding practices, visit the OSHA Welding, Cutting & Brazing Safety Guidelines.
Frequently Asked Questions
Q: What material are these spot welding needle tips made from?
A: These welding needle electrode tips are made from aluminum oxide copper (Cu-Al₂O₃), a dispersion-strengthened copper alloy that combines excellent electrical conductivity with superior hardness and wear resistance — making them ideal for repeated spot welding cycles.
Q: What spot welder models are these 3mm needle tips compatible with?
A: These 3mm diameter, 50mm length electrode tips are designed to fit standard handheld spot welder pens commonly used for 18650 lithium battery pack assembly. Always verify your welder's electrode holder accepts a 3mm shank before ordering.
Q: Can these welding tips be used for materials other than nickel strips?
A: Yes. These aluminum oxide copper spot welding needles are suitable for welding nickel strips, nickel-infiltrated steel strips, and galvanized steel strips, making them versatile for a range of battery cell and tab welding applications.
Q: How long do these electrode tips last?
A: Thanks to the double-end design and wear-resistant aluminum oxide copper construction, each tip can be used from both ends, significantly extending its service life compared to single-end alternatives. Longevity will vary based on current settings and welding frequency.
