{"product_id":"3mm-copper-oxide-spot-welding-needles-for-18650-battery-2-5-10pc","title":"3MM Copper Oxide Spot Welding Needles for 18650 Battery | 2\/5\/10Pc","description":"\u003ch2\u003eDouble-Head Copper Oxide Spot Welding Electrode Needles – 3×50mm\u003c\/h2\u003e\n\u003cp\u003eUpgrade your battery spot welding setup with these precision-crafted \u003cstrong\u003e3MM purple copper oxide double-head electrode needles\u003c\/strong\u003e. Designed specifically for use with 18650 power batteries, these consumable tips deliver consistent, clean contact for reliable spot welds every time. Available in convenient packs of 2, 5, or 10 so you always have spares on hand.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Copper Construction:\u003c\/strong\u003e Made from high-quality copper with a copper oxide surface treatment for improved conductivity and extended tip life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble-Head Design:\u003c\/strong\u003e Both ends are usable, effectively doubling the working life of each needle and reducing replacement frequency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized for 18650 Batteries:\u003c\/strong\u003e Purpose-built electrode geometry ensures precise, focused welds on 18650 power battery packs and similar battery assemblies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConsistent Dimensions:\u003c\/strong\u003e Each needle measures 3×50mm for a standardized, repeatable fit in compatible spot welding pens and machines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Pack Options:\u003c\/strong\u003e Choose from 2, 5, or 10-piece packs to suit your project scale and stocking needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Replacement:\u003c\/strong\u003e Quick-swap design means minimal downtime between welds — simply replace the tip and continue working.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Copper (copper oxide electrode head)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 3×50mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Double-head spot welding needle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 2 \/ 5 \/ 10 pieces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e 18650 power batteries and similar lithium battery spot welding applications\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2, 5, or 10× Copper Oxide Double-Head Spot Welding Needles (3×50mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Please allow 2–3% dimensional variance due to manual measurement. Actual product color may vary slightly from images depending on monitor settings.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What spot welding machines are these 3MM copper oxide electrode needles compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: These 3×50mm double-head spot welding needles are designed to fit most standard spot welding pens and machines that accept 3MM electrode tips, commonly used for 18650 lithium battery pack assembly and repair. Always check your machine's tip diameter specification before ordering.\u003c\/p\u003e\n\u003ch4\u003eQ: Why choose copper oxide electrode needles over standard copper tips?\u003c\/h4\u003e\n\u003cp\u003eA: Copper oxide (purple copper) electrode heads offer enhanced surface hardness and oxidation resistance compared to bare copper, resulting in more consistent electrical contact, reduced tip wear, and longer service life — making them a popular choice among battery pack builders and electronics hobbyists.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use both ends of the double-head needle?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The double-head design means both ends of each needle are functional electrode tips. Once one end wears down, simply flip the needle and continue welding, effectively doubling the usable life of each piece.\u003c\/p\u003e\n\u003ch4\u003eQ: How many pieces should I order?\u003c\/h4\u003e\n\u003cp\u003eA: For occasional hobbyist use, the 2-pack is a great starting point. For regular battery pack builds or workshop use, the 5- or 10-piece packs offer better value and ensure you always have fresh tips available.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What spot welding machines are these 3MM copper oxide electrode needles compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These 3×50mm double-head spot welding needles are designed to fit most standard spot welding pens and machines that accept 3MM electrode tips, commonly used for 18650 lithium battery pack assembly and repair. Always check your machine's tip diameter specification before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"Why choose copper oxide electrode needles over standard copper tips?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Copper oxide (purple copper) electrode heads offer enhanced surface hardness and oxidation resistance compared to bare copper, resulting in more consistent electrical contact, reduced tip wear, and longer service life — making them a popular choice among battery pack builders and electronics hobbyists.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use both ends of the double-head needle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The double-head design means both ends of each needle are functional electrode tips. 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For regular battery pack builds or workshop use, the 5- or 10-piece packs offer better value and ensure you always have fresh tips available.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"3MM Copper Oxide Spot Welding Needles for 18650 Battery | 2\/5\/10Pc\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/3mm-copper-oxide-spot-welding-needles-18650-battery-double-head\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"10pcs","offer_id":43692818530365,"sku":"10:479#10pcs","price":19.5,"currency_code":"USD","in_stock":true},{"title":"5pcs","offer_id":43692818563133,"sku":"10:100006966#5pcs","price":14.12,"currency_code":"USD","in_stock":true},{"title":"2pcs","offer_id":43692818595901,"sku":"10:206#2pcs","price":10.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/3439\/0333\/files\/S1da4e22ab62a444aac9b5b72bc4346f1z.webp?v=1790179493","url":"https:\/\/qtiply.com\/products\/3mm-copper-oxide-spot-welding-needles-for-18650-battery-2-5-10pc","provider":"QTP","version":"1.0","type":"link"}