{"product_id":"21700-insulator-rings-fish-paper","title":"21700 Battery Insulator Rings – Adhesive Fish Paper 200 \/ 400 \/ 600 pcs","description":"\u003ch2\u003e21700 Self-Adhesive Fish-Paper Insulator Rings – 200 \/ 400 \/ 600 pcs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision-sized fish-paper insulator rings for 21700 cells — dimensioned for an exact fit on the positive end so they sit flush, with no overhang or gaps. Peel, stick, and prevent top-cap shorts during spot welding and pack assembly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExact 21700 fit\u003c\/strong\u003e – OD 19.8 mm \/ ID 10.5 mm, sized to sit flush on the cell’s positive terminal with no shifting or overhang\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle-side adhesive\u003c\/strong\u003e – peel-and-stick backing for fast, clean installation that stays put under weld pressure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable fish paper\u003c\/strong\u003e – high dielectric strength and heat resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for DIY builders\u003c\/strong\u003e – battery packs, e-bikes, power tools, robotics, and energy storage projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: Fish paper (single-side adhesive)\u003c\/li\u003e\n  \u003cli\u003eOuter diameter: 19.8 mm\u003c\/li\u003e\n  \u003cli\u003eInner diameter: 10.5 mm\u003c\/li\u003e\n  \u003cli\u003eThickness: 0.2 mm\u003c\/li\u003e\n  \u003cli\u003ePack sizes: 200 \/ 400 \/ 600 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eYour selected quantity (200, 400, or 600) of 21700 self-adhesive fish-paper rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is Not Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBattery cells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to Know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShips flat; larger quantities may ship in multiple envelopes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Parts and Resources\u003c\/strong\u003e\u003cbr\u003e\nFor nickel, pre-cut busbars, BMS boards, and more rebuild supplies, visit our shop \u003cstrong\u003eRenewSpark\u003c\/strong\u003e. We also offer the \u003cstrong\u003eRenewSpark Tools\u003c\/strong\u003e app, built to help DIY builders and professionals with battery-building calculators and utilities.\u003c\/p\u003e","brand":"RenewSpark","offers":[{"title":"200","offer_id":47812625924323,"sku":"IR103","price":14.99,"currency_code":"USD","in_stock":true},{"title":"400","offer_id":47812625957091,"sku":"IR104","price":26.99,"currency_code":"USD","in_stock":true},{"title":"600","offer_id":47812625989859,"sku":"IR105","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/7594\/8771\/files\/insulationring.jpg?v=1756776801","url":"https:\/\/renewspark.com\/products\/21700-insulator-rings-fish-paper","provider":"RenewSpark","version":"1.0","type":"link"}