{"product_id":"18650-21700-battery-solder-joint-auxiliary-grinding-tool","title":"18650 21700 Battery Solder Joint Auxiliary Grinding Tool","description":"\u003ch2\u003e18650 \u0026amp; 21700 Battery Solder Joint Auxiliary Grinding Tool\u003c\/h2\u003e\n\u003cp\u003eKeep your battery packs in peak condition with this precision-engineered \u003cstrong\u003eBattery Solder Joint Auxiliary Grinding Tool\u003c\/strong\u003e, purpose-built for 18650 and 21700 cylindrical cells. Whether you're rebuilding battery packs, cleaning up solder joints, or polishing contact points, this compact grinding tool gives you consistent, repeatable results every time.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from a durable \u003cstrong\u003eplastic and metal composite\u003c\/strong\u003e, this tool is built to withstand repeated use in workshop environments. The ergonomic design keeps your hands steady while the grinding head delivers smooth, controlled material removal — no slipping, no guesswork.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with 18650 \u0026amp; 21700 batteries\u003c\/strong\u003e — fits the most popular cylindrical cell formats\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo grinding head sizes\u003c\/strong\u003e — 45 × 12 mm and 46 × 10 mm for versatile application\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable plastic + metal construction\u003c\/strong\u003e — lightweight yet long-lasting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable in 3 color options\u003c\/strong\u003e — choose the one that suits your workbench style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for solder joint prep, cleaning \u0026amp; polishing\u003c\/strong\u003e — achieve clean, flush solder points effortlessly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; portable\u003c\/strong\u003e — easy to store and reach for when you need it\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 Plastic + Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrinding Head Size:\u003c\/strong\u003e 45 × 12 mm \/ 46 × 10 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Battery Types:\u003c\/strong\u003e 18650, 21700\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor Options:\u003c\/strong\u003e 3 available\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis tool is a must-have for electronics hobbyists, DIY battery pack builders, e-bike enthusiasts, and anyone who regularly works with lithium-ion cylindrical cells. It streamlines solder joint prep and cleanup, saving you time and delivering professional-grade results from the comfort of your own workshop.\u003c\/p\u003e\n\n\u003cp\u003eFor more guidance on safe practices when working with lithium-ion batteries and power tools, visit CPSC Lithium-Ion Battery Safety Information.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What battery sizes is this grinding tool compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This auxiliary grinding tool is specifically designed for use with \u003cstrong\u003e18650 and 21700 cylindrical lithium-ion batteries\u003c\/strong\u003e — two of the most widely used formats in DIY battery packs, power tools, and e-bike systems.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the grinding head dimensions?\u003c\/h4\u003e\n\u003cp\u003eA: The tool comes with two grinding head sizes: \u003cstrong\u003e45 × 12 mm\u003c\/strong\u003e and \u003cstrong\u003e46 × 10 mm\u003c\/strong\u003e, giving you flexibility for different solder joint profiles and cell geometries.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the tool made of?\u003c\/h4\u003e\n\u003cp\u003eA: The battery solder joint auxiliary grinding tool is crafted from a combination of \u003cstrong\u003eplastic and metal\u003c\/strong\u003e, balancing lightweight handling with the durability needed for regular workshop use.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use this tool for polishing as well as grinding?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — in addition to grinding and prepping solder joints on 18650 and 21700 battery cells, this tool is also suited for \u003cstrong\u003epolishing and cleaning contact surfaces\u003c\/strong\u003e, helping you achieve smooth, reliable electrical connections.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What battery sizes is this grinding tool compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This auxiliary grinding tool is specifically designed for use with 18650 and 21700 cylindrical lithium-ion batteries — two of the most widely used formats in DIY battery packs, power tools, and e-bike systems.\"}}, {\"@type\": \"Question\", \"name\": \"What are the grinding head dimensions?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The tool comes with two grinding head sizes: 45 × 12 mm and 46 × 10 mm, giving you flexibility for different solder joint profiles and cell geometries.\"}}, {\"@type\": \"Question\", \"name\": \"What is the tool made of?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The battery solder joint auxiliary grinding tool is crafted from a combination of plastic and metal, balancing lightweight handling with the durability needed for regular workshop use.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this tool for polishing as well as grinding?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — in addition to grinding and prepping solder joints on 18650 and 21700 battery cells, this tool is also suited for polishing and cleaning contact surfaces, helping you achieve smooth, reliable electrical connections.\"}}]}\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:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Hand Tools \u0026 Hardware\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/hand-tools-hardware\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"18650 21700 Battery Solder Joint Auxiliary Grinding Tool\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/18650-21700-battery-solder-joint-auxiliary-grinding-tool\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"two","offer_id":49713868865750,"sku":"14:350852#two","price":21.98,"currency_code":"USD","in_stock":true},{"title":"21700","offer_id":49713868898518,"sku":"14:350850#21700","price":21.98,"currency_code":"USD","in_stock":true},{"title":"18650","offer_id":49713868931286,"sku":"14:350686#18650","price":21.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/S01303b2a48fe42c2aa32635a0933437aX.webp?v=1785274666","url":"https:\/\/qmeboost.com\/products\/18650-21700-battery-solder-joint-auxiliary-grinding-tool","provider":"Qme","version":"1.0","type":"link"}