{"product_id":"fortress-power-durarack-outdoor-rated-fp-850079800113","title":"Fortress Power DuraRack Indoor\/Outdoor Battery Enclosure","description":"\u003ch6\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cstrong\u003eNote: Outdoor rated enclosure, holds 4 eFlex or eFlex Max units per rack. Includes busbars and 4 sets of “+” and “-” battery cables; UL 9540 Certified\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1\u003e\u003cstrong\u003eFortress Power DuraRack Indoor\/Outdoor Battery Enclosure\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/Prod_page_1600_x_900_px.png?v=1787884120\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Fortress Power DuraRack is an all-weather battery enclosure designed for safe, organized indoor and outdoor energy storage installations. Constructed from carbon steel, each enclosure accommodates up to four eFlex 5.4kWh batteries for a storage capacity of up to 21.6kWh.\u003c\/p\u003e\n\u003cp\u003eFor larger systems, up to four DuraRack enclosures can be used together to support as many as 15 eFlex batteries and 81kWh of storage. Integrated busbars and battery cables simplify installation, while vented airflow provides passive cooling in warm environments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHolds up to four eFlex 5.4kWh batteries\u003c\/li\u003e\n\u003cli\u003eProvides 5.4kWh to 21.6kWh of storage per enclosure\u003c\/li\u003e\n\u003cli\u003eExpandable to four enclosures, 15 batteries and 81kWh\u003c\/li\u003e\n\u003cli\u003eIP54-rated for indoor and outdoor installations\u003c\/li\u003e\n\u003cli\u003eIntegrated positive and negative busbars\u003c\/li\u003e\n\u003cli\u003ePre-wired with battery cables\u003c\/li\u003e\n\u003cli\u003eVented design promotes passive cooling\u003c\/li\u003e\n\u003cli\u003eCompatible with the optional Fortress Power Heat Mat Kit\u003c\/li\u003e\n\u003cli\u003eFree-standing or pad-mounted installation\u003c\/li\u003e\n\u003cli\u003eClean, tamper-resistant design\u003c\/li\u003e\n\u003cli\u003eSuitable for residential and commercial applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe width=\"1337\" height=\"752\" src=\"https:\/\/www.youtube.com\/embed\/DepMJrMSMSg\" title=\"How to Install the eFlex Max Heating Kit | Fortress Power Battery Installation Guide\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Material\u003c\/td\u003e\n\u003ctd\u003eCarbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Protection\u003c\/td\u003e\n\u003ctd\u003eIP54 water and dust protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Color\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e29.29 × 41.34 × 18.03 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric Dimensions\u003c\/td\u003e\n\u003ctd\u003e744 × 1,050 × 458 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Weight\u003c\/td\u003e\n\u003ctd\u003e153.2 lbs \/ 59.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Batteries per Enclosure\u003c\/td\u003e\n\u003ctd\u003eFour eFlex 5.4kWh batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Capacity per Enclosure\u003c\/td\u003e\n\u003ctd\u003e5.4kWh–21.6kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum System Storage Capacity\u003c\/td\u003e\n\u003ctd\u003e81kWh with four enclosures in parallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnockout Sizes\u003c\/td\u003e\n\u003ctd\u003e1 inch and 2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePositive and Negative Battery Busbars\u003c\/td\u003e\n\u003ctd\u003eTwo × four points; M8 (5\/16-inch) terminal rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePositive and Negative Busbars to Inverter\u003c\/td\u003e\n\u003ctd\u003eTwo points; M10 (3\/8-inch) terminal rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Torque\u003c\/td\u003e\n\u003ctd\u003e7.0–7.7 Nm \/ 5.1–5.7 ft-lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eFree-standing or pad-mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Warranty\u003c\/td\u003e\n\u003ctd\u003eThree years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications and Listings\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, CEC and SGIP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many batteries fit inside one Fortress Power DuraRack?\u003c\/strong\u003e\u003cbr\u003eA: Each DuraRack accommodates up to four Fortress Power eFlex 5.4kWh batteries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much energy storage does one DuraRack support?\u003c\/strong\u003e\u003cbr\u003eA: Depending on the number of installed batteries, one enclosure supports between 5.4kWh and 21.6kWh.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can multiple DuraRack enclosures be used together?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The system can expand to four enclosures supporting up to 15 eFlex batteries and 81kWh of total storage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the DuraRack be installed outdoors?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The enclosure is IP54-rated for water and dust resistance and is suitable for indoor or outdoor installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the DuraRack support cold-weather installations?\u003c\/strong\u003e\u003cbr\u003eA: Yes. It is compatible with the optional Fortress Power Heat Mat Kit, which provides automatic cold-weather battery protection.\u003c\/p\u003e","brand":"Fortress Power","offers":[{"title":"Default Title","offer_id":48514623963354,"sku":"FP-850079800113","price":1485.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/Prodpage-2026-08-27T223546.994.png?v=1787884555","url":"https:\/\/powergenstore.com\/products\/fortress-power-durarack-outdoor-rated-fp-850079800113","provider":"PowerGen Store","version":"1.0","type":"link"}