{"title":"21700 Battery Insulators","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e21700 battery insulators are adhesive terminal rings that protect against shorts when you're building a pack.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eRight at the positive end of a bare cell, the wrap edge sits close to the metal casing — and that's a prime spot for a short if the wrap gets nicked or pinched during assembly. An insulator ring covers that junction, keeping the positive terminal cleanly isolated from the casing so your build stays safe through welding and handling. Small part, real consequence.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMade to fit 21700 cells, these are a go-to supply for anyone welding cells into series or parallel packs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKey features\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdhesive rings sized for 21700 cells\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIsolate the positive terminal from the casing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eReduce short-circuit risk during assembly\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA staple of safe pack building\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eBuilt for\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCustom and DIY 21700 pack assembly\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProtecting terminals during spot welding\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePreventing wrap-edge shorts\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSeries and parallel pack builds\u003c\/li\u003e\n\u003c\/ul\u003e","products":[{"product_id":"21700-battery-terminal-insulators-20pcs-black-plastic","title":"21700 Battery Terminal Insulators - 20pcs - Black Plastic","description":"Safeguard your battery connections with our premium 21700 Battery Terminal Insulators. This set of 20 robust, self-adhesive insulators is essential for replacing worn or damaged insulators, effectively preventing short circuits in your devices. Each insulator measures 20.5 x 20.5 x .5mm, perfectly sized to fit flat top 21700. Made from thick, durable materials, these insulators ensure long-lasting protection and are an indispensable part of your battery maintenance toolkit.\u003cbr\u003e\u003cbr\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cb\u003eUniversal Compatibility:\u003c\/b\u003e Designed to fit flat top 21700 batteries, catering to a broad range of portable electronic needs.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cb\u003eOptimal Size:\u003c\/b\u003e Each insulator measures 20.5 x 20.5 x .5mm, engineered for a perfect fit and easy application.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cb\u003eEnhanced Safety:\u003c\/b\u003e Crafted from strong, thick materials to prevent short circuits, crucial for safe battery operation.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSelf-Adhesive Convenience:\u003c\/b\u003e Equipped with a self-adhesive backing for quick, secure attachment and hassle-free replacement.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eBulk Pack of 20:\u003c\/b\u003e Supplied in a pack of 20, making it easy to maintain multiple batteries and ensure consistent protection.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cbr\u003e\r\n\u003cb\u003eSPECIFICATIONS\u003c\/b\u003e\r\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eMaterial:\u003c\/td\u003e\r\n\u003ctd\u003ePlastic with self-adhesive backing\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eColor:\u003c\/td\u003e\r\n\u003ctd\u003eAs shown\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eFits:\u003c\/td\u003e\r\n\u003ctd\u003eFlat Top 21700\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eSize:\u003c\/td\u003e\r\n\u003ctd\u003e20.5 x 20.5 x .5mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\u003c\/div\u003e","brand":"18650Battery.com","offers":[{"title":"Default Title","offer_id":48703036588342,"sku":"IN-21-GBK-20","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/IN-21-GBK-20.jpg?v=1769026482"},{"product_id":"21700-battery-terminal-insulators-20pcs-white-plastic","title":"21700 Battery Terminal Insulators - 20pcs - White Plastic","description":"Safeguard your battery connections with our premium 21700 Battery Terminal Insulators. This set of 20 robust, self-adhesive insulators is essential for replacing worn or damaged insulators, effectively preventing short circuits in your devices. Each insulator measures 20.5 x 20.5 x .5mm, perfectly sized to fit flat top 21700. Made from thick, durable materials, these insulators ensure long-lasting protection and are an indispensable part of your battery maintenance toolkit.\u003cbr\u003e\u003cbr\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cb\u003eUniversal Compatibility:\u003c\/b\u003e Designed to fit flat top 21700 batteries, catering to a broad range of portable electronic needs.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cb\u003eOptimal Size:\u003c\/b\u003e Each insulator measures 20.5 x 20.5 x .5mm, engineered for a perfect fit and easy application.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cb\u003eEnhanced Safety:\u003c\/b\u003e Crafted from strong, thick materials to prevent short circuits, crucial for safe battery operation.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eSelf-Adhesive Convenience:\u003c\/b\u003e Equipped with a self-adhesive backing for quick, secure attachment and hassle-free replacement.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cb\u003eBulk Pack of 20:\u003c\/b\u003e Supplied in a pack of 20, making it easy to maintain multiple batteries and ensure consistent protection.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cbr\u003e\r\n\u003cb\u003eSPECIFICATIONS\u003c\/b\u003e\r\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eMaterial:\u003c\/td\u003e\r\n\u003ctd\u003ePlastic with self-adhesive backing\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eColor:\u003c\/td\u003e\r\n\u003ctd\u003eAs shown\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eFits:\u003c\/td\u003e\r\n\u003ctd\u003eFlat Top 21700\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eSize:\u003c\/td\u003e\r\n\u003ctd\u003e20.5 x 20.5 x .5mm\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\u003c\/div\u003e","brand":"18650Battery.com","offers":[{"title":"Default Title","offer_id":48703037407542,"sku":"IN-21-MWH-20","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/IN-21-MWH-20.jpg?v=1769026487"},{"product_id":"21700-terminal-insulators-fish-paper-20pcs-green-round-rings","title":"21700 Terminal Insulators Fish Paper – 20pcs Green Round Rings","description":"\u003cp\u003e\u003cstrong\u003eProtect your 21700 batteries\u003c\/strong\u003e with this 20-pack of Green Fish Paper Terminal Insulators. Designed specifically for 21700 lithium-ion cells, these round ring insulators shield the positive terminal, reducing the risk of electrical shorts and enhancing battery safety during assembly and use.\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eExact Fit for 21700 Batteries:\u003c\/strong\u003e Tailored to sit securely on the positive terminal of 21700 lithium-ion cells.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality Fish Paper:\u003c\/strong\u003e Heat-resistant and non-conductive for safe and reliable insulation.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eRound Ring Design:\u003c\/strong\u003e Center opening allows for snug placement on flat or button-top terminals.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eBright Green Color:\u003c\/strong\u003e Easy to identify during installation and battery pack inspection.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003ePerfect for DIY or Commercial Use:\u003c\/strong\u003e Ideal for building or repairing battery packs, power tools, flashlights, and e-bike batteries.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eMaterial: Electrical-grade Fish Paper\u003c\/li\u003e\r\n  \u003cli\u003eStyle: Round Ring\u003c\/li\u003e\r\n  \u003cli\u003eColor: Green\u003c\/li\u003e\r\n  \u003cli\u003eBattery Size Compatibility: 21700 Lithium-Ion\u003c\/li\u003e\r\n  \u003cli\u003eQuantity: 20 Pieces\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003eUse these \u003cstrong\u003e21700 battery insulator rings\u003c\/strong\u003e to add a critical layer of safety and reliability to your lithium-ion battery projects.\u003c\/p\u003e\r\n","brand":"18650Battery.com","offers":[{"title":"Default Title","offer_id":52207903637814,"sku":"FISH-21700H-GR","price":1.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/FISH-21700H-GR.jpg?v=1769026542"},{"product_id":"21700-terminal-insulators-fish-paper-20pcs-green-round-rings-solid","title":"21700 Terminal Insulators Fish Paper – 20pcs Green Round Rings Solid","description":"\u003cp\u003e\u003cstrong\u003eProtect and insulate your 21700 lithium-ion batteries\u003c\/strong\u003e with this 20-piece pack of Green Solid Fish Paper Terminal Insulators. Engineered for professional battery pack builders and DIY enthusiasts, these insulator rings provide reliable electrical insulation around the positive terminal to prevent short circuits and heat buildup during high-drain usage.\u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eDesigned for 21700 Cells:\u003c\/strong\u003e Precision-cut to fit standard 21700 battery terminals perfectly.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eSolid Ring Style:\u003c\/strong\u003e Fully enclosed center provides maximum contact surface insulation and enhanced safety.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003ePremium Fish Paper Material:\u003c\/strong\u003e High heat resistance, strong dielectric properties, and exceptional durability.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eVibrant Green Color:\u003c\/strong\u003e Makes installation and inspection easy, especially in multi-cell battery packs.\u003c\/li\u003e\r\n  \u003cli\u003e\n\u003cstrong\u003eEssential Battery Safety:\u003c\/strong\u003e Prevents electrical shorts, improves thermal protection, and ensures long-term performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003eMaterial: Electrical-grade Fish Paper\u003c\/li\u003e\r\n  \u003cli\u003eDesign: Solid Round Ring\u003c\/li\u003e\r\n  \u003cli\u003eColor: Green\u003c\/li\u003e\r\n  \u003cli\u003eFit: 21700 Lithium-Ion Cells\u003c\/li\u003e\r\n  \u003cli\u003eQuantity: 20 pieces per pack\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\r\n\u003cp\u003eUpgrade your battery builds with trusted insulation. These \u003cstrong\u003e21700 fish paper terminal insulators\u003c\/strong\u003e are a must-have for assembling safe and reliable battery packs for tools, EVs, flashlights, and energy storage projects.\u003c\/p\u003e\r\n","brand":"18650Battery.com","offers":[{"title":"Default Title","offer_id":52207903768886,"sku":"FISH-21700S-GR","price":1.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/2761\/1190\/files\/FISH-21700S-GR.jpg?v=1769026546"}],"url":"https:\/\/18650battery.com\/collections\/21700-battery-insulators.oembed","provider":"18650Battery","version":"1.0","type":"link"}