{"product_id":"18650-21700-battery-solder-joint-grinding-tool-dual-head","title":"18650 \u0026 21700 Battery Solder Grinding Tool – Dual Head","description":"\n\u003ch2\u003e18650 \u0026amp; 21700 Battery Solder Joint Grinding Tool\u003c\/h2\u003e\n\u003cp\u003eDesigned for battery technicians, hobbyists, and electronics repair professionals, this high-efficiency solder joint grinding tool makes battery disassembly and re-welding preparation faster and more precise than ever. Compatible with both 18650 and 21700 battery formats, it delivers workshop-grade results in a compact, lightweight package.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Positioning Slots:\u003c\/strong\u003e Precisely engineered slots securely hold 18650 and 21700 batteries, ensuring perfect alignment between welding spots and grinding heads without damaging the battery cell.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Grinding Heads \u0026amp; High-Speed Motor:\u003c\/strong\u003e Process over 30 welding spots per session — triple the efficiency of single-head tools — making battery disassembly and re-welding preparation significantly faster.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Flatness Within 0.1mm:\u003c\/strong\u003e Multi-stage grinding removes weld protrusions and polishes surfaces to a flatness of ≤0.1mm, ensuring optimal conditions for re-welding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntelligent Auto-Slowdown Sensing:\u003c\/strong\u003e Automatically reduces speed when the tool contacts a surface, protecting both the battery and operator for safer, more controlled operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Dust Cover \u0026amp; Vacuum:\u003c\/strong\u003e Collects metal debris during grinding, minimizing contamination and reducing the risk of short circuits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP54 Dust \u0026amp; Water Resistance:\u003c\/strong\u003e Rugged enough for real workshop environments, with a durable plastic body rated IP54.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eErgonomic Lightweight Design:\u003c\/strong\u003e Weighs just 0.8 kg with an ergonomic handle that reduces hand fatigue during extended use sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Change Grinding Heads:\u003c\/strong\u003e Swap out grinding heads easily and quickly to keep your workflow uninterrupted.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReusable \u0026amp; Non-Electronic:\u003c\/strong\u003e A robust mechanical tool built for repeated, long-term use — no batteries or charger required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Battery Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18650, 21700\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e21700 Slot Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 6.7 × 2.6 cm (2.64 × 1.02 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e18650 Slot Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 6.5 × 2.3 cm (2.56 × 0.91 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Flatness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 0.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP54 (Dust \u0026amp; Water Resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReusability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReusable\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Grinding Sleeve Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit 9–19mm | HIP Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/105-degree-right-angle-driver-with-hex-screwdriver-bit\"\u003e105° Right Angle Driver with 1\/4\" Hex Screwdriver Bit | HIP\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which battery sizes does this grinding tool support?\u003c\/h4\u003e\n\u003cp\u003eA: This battery solder joint grinding tool is designed to work with both 18650 and 21700 cylindrical battery cells. The adjustable positioning slots accommodate both sizes securely, ensuring accurate alignment for precise grinding every time.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the tool require batteries or a power source to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a mechanical grinding tool and does not require batteries, a charger, or any external power source. It is a fully manual, non-electronic instrument ready to use straight out of the box.\u003c\/p\u003e\n\u003ch4\u003eQ: How does the dual-head design improve efficiency?\u003c\/h4\u003e\n\u003cp\u003eA: The dual grinding heads, combined with the high-speed motor, allow the tool to process more than 30 welding spots per session — approximately three times faster than comparable single-head tools. This makes it ideal for high-volume battery repair and disassembly workflows.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this tool safe to use in dusty workshop environments?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The tool carries an IP54 dust and water resistance rating, making it suitable for typical workshop conditions. The integrated dust cover and vacuum system also collect metal debris during operation, keeping your workspace cleaner and reducing short-circuit risks.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which battery sizes does this grinding tool support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This battery solder joint grinding tool is designed to work with both 18650 and 21700 cylindrical battery cells. The adjustable positioning slots accommodate both sizes securely, ensuring accurate alignment for precise grinding every time.\"}}, {\"@type\": \"Question\", \"name\": \"Does the tool require batteries or a power source to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this is a mechanical grinding tool and does not require batteries, a charger, or any external power source. It is a fully manual, non-electronic instrument ready to use straight out of the box.\"}}, {\"@type\": \"Question\", \"name\": \"How does the dual-head design improve efficiency?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The dual grinding heads, combined with the high-speed motor, allow the tool to process more than 30 welding spots per session — approximately three times faster than comparable single-head tools. 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