{"product_id":"reention-dorado-21700-ebike-battery-case-upgrade-shell-kit","title":"Battery Replacement Shell \u0026amp; Upgrade Case (36V \/ 48V \/ 52V)","description":"\u003ch1\u003eReention Dorado 21700 Semi-Hidden E-Bike Battery Replacement Shell \u0026amp; Upgrade Case (36V \/ 48V \/ 52V) – Extended Range Case with Cell Spacers\u003c\/h1\u003e\n\u003cp\u003eUpgrade your e-bike's energy storage capacity with the heavy-duty \u003cb\u003eReention Dorado 21700 Semi-Hidden Battery Enclosure Kit\u003c\/b\u003e. Engineered specifically for custom battery builders, repair technicians, and e-bike owners looking to build high-capacity lithium packs, this replacement case fits high-density \u003cb\u003e21700 lithium-ion cells\u003c\/b\u003e to deliver significantly higher amp-hour (Ah) ratings than standard 18650 builds.\u003c\/p\u003e\n\u003cp\u003eThis versatile battery housing is designed for seamless integration into semi-hidden downtube frame slots. It serves as a direct replacement or extended-capacity upgrade for bikes equipped with \u003cb\u003eReention Dorado Max, Plus, Pro, and Mini\u003c\/b\u003e battery profiles (provided your frame's internal clearance matches the casing length).\u003c\/p\u003e\n\u003ch3\u003e🚀 Key High-Performance Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHigh-Density 21700 Cell Compatibility:\u003c\/b\u003e Designed to hold larger 21700 format cells, allowing you to build higher amp-hour (Ah) capacity packs for extended riding range and improved high-drain performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUniversal Reention Dorado Upgrade Path:\u003c\/b\u003e Backwards compatible with Reention Dorado Plus, Max, Pro, and Mini frame mounts (check frame length clearance to fit the 458mm extended shell).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eComplete Precision Cell Holder Assembly:\u003c\/b\u003e Includes custom-molded \u003cb\u003e21700 cell spacer grids\u003c\/b\u003e to ensure proper thermal dissipation, structural alignment, and vibration resistance for off-road and city riding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMultiple Voltage \u0026amp; Length Options:\u003c\/b\u003e Available in \u003cb\u003e394mm (52-cell capacity)\u003c\/b\u003e and \u003cb\u003e458mm (65-cell capacity)\u003c\/b\u003e configurations for 36V, 48V, and 52V battery architectures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIntegrated Power Indicator:\u003c\/b\u003e Features built-in LED voltage level monitoring calibrated for 36V, 48V, or 52V pack setups to give you quick battery capacity status.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSemi-Hidden Frame Integration:\u003c\/b\u003e Retains a clean, aerodynamic downtube profile while protecting internal cells and BMS electronics from dust, moisture, and road debris.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e📊 Technical Specifications \u0026amp; Sizing Matrix\u003c\/h3\u003e\n\u003cp\u003eChoose the appropriate casing length and cell capacity based on your bike frame dimensions and desired voltage\/series configuration: \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eReention Dorado 21700 Shell Performance Parameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eBrand Designation\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eDsaikl \/ Reention Compatible\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eEnclosure Style\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSemi-Hidden Downtube E-Bike Battery Case\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCompatible Cell Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e21700 Lithium-Ion Cells\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eVoltage Indicator Options\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e36V \/ 48V \/ 52V\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e394mm Case Spec\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e394mm Length\u003c\/b\u003e | Includes \u003cb\u003e52-Piece 21700 Cell Spacers\u003c\/b\u003e (e.g., 10S5P 36V Pack)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e458mm Extended Case Spec\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003e458mm Length\u003c\/b\u003e | Includes \u003cb\u003e65-Piece 21700 Cell Spacers\u003c\/b\u003e (e.g., 13S5P 48V or 14S4P 52V Pack)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCompatible Retention Families\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eDorado 21700, Dorado Max, Dorado Plus, Dorado Pro, Dorado Mini\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eFinish \u0026amp; Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eHigh-Impact ABS \u0026amp; Aluminum Composite (Sleek Matte Black)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eHazardous Chemical Registry\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003ccode\u003eHigh-concerned chemical: None\u003c\/code\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e⚙️ Assembly \u0026amp; Frame Fitting Guidelines\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFrame Clearance Measurement:\u003c\/b\u003e Before ordering an extended 458mm length shell to upgrade a Dorado Mini or Plus, measure your frame's inner downtube battery channel to ensure an extra-long casing can slide into position without obstruction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCell Arrangement:\u003c\/b\u003e Use the included 21700 cell spacer grids to group your series and parallel cell combinations (10S5P for 36V; 13S5P for 48V; 14S4P for 52V setups).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBMS \u0026amp; Wiring Placement:\u003c\/b\u003e Reserve space inside the end-cap sections for your Battery Management System (BMS) wiring harness, charge port lead, and main discharge cables.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e📦 What's Inside the Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Reention Dorado 21700 E-Bike Battery Enclosure (Matte Black)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Internal 21700 Cell Holder \/ Spacer Grid Set (52-Piece or 65-Piece based on size selection)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 x Integrated LED Power Indicator Panel Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eMaximize your e-bike's range and build custom high-output 21700 battery packs. Select your case length and voltage indicator below, click Add to Cart, and start your battery build today!\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Ebike Power Network","offers":[{"title":"36v Box 394mm 2pins","offer_id":47396603625643,"sku":"14:200006154#36v Box 394mm 2pins","price":85.08,"currency_code":"USD","in_stock":true},{"title":"36v Box 458mm 2pins","offer_id":47396603494571,"sku":"14:200006151#36v Box 458mm 2pins","price":85.8,"currency_code":"USD","in_stock":true},{"title":"Top Bottom Covers36v","offer_id":47396603527339,"sku":"14:200002984#Top Bottom Covers36v","price":38.36,"currency_code":"USD","in_stock":true},{"title":"Top Bottom Covers48v","offer_id":47396603396267,"sku":"14:200002130#Top Bottom Covers48v","price":38.36,"currency_code":"USD","in_stock":true},{"title":"48v Box 394mm 2pins","offer_id":47396603592875,"sku":"14:200006156#48v Box 394mm 2pins","price":85.08,"currency_code":"USD","in_stock":true},{"title":"48v Box 458mm 2pins","offer_id":47396603461803,"sku":"14:200006152#48v Box 458mm 2pins","price":85.8,"currency_code":"USD","in_stock":true},{"title":"48v Box 458mm 6pins","offer_id":47396603560107,"sku":"14:200004889#48v Box 458mm 6pins","price":85.8,"currency_code":"USD","in_stock":true},{"title":"52v Box 458mm 2pins","offer_id":47396603429035,"sku":"14:200006153#52v Box 458mm 2pins","price":85.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/2649\/7451\/files\/S6248efafd038477095eed752f559d5a12.webp?v=1784073543","url":"https:\/\/chargemyebike.com\/products\/reention-dorado-21700-ebike-battery-case-upgrade-shell-kit","provider":"Ebike Power Network","version":"1.0","type":"link"}