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{"id":9371180794095,"title":"Fortress Power DuraRack Energy Storage Enclosure for eFlex \/ eFlex MAX Batteries","handle":"fortress-power-durarack-energy-storage-enclosure-for-eflex-eflex-max-batteries","description":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eExpand your energy storage with the new Fortress Power DuraRack! This enclosure stores up to 4 eFlex or eFlex MAX 5.4kWh batteries. The DuraRack paired with multiple eFlex or eFlex MAX batteries can build a 48V UPS server rack or provide storage capacity to home solar arrays. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThe DuraRack includes integrated busbars and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features \u0026amp; Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eExpandable Energy Storage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Holds up to 4 eFlex or eFlex MAX 5.4kWh batteries per unit, with storage capacity ranging from 5.4kWh to 21.6kWh per unit. Expandable up to 7 units for a total of 28 eFlex batteries and 151.2 kWh of storage capacity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eIP54 Water and Dust Resistant:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rated for both indoor and outdoor installation, providing protection against dust and water splashes for reliable performance in various environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eIntegrated Busbars:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes positive and negative battery busbars (2 × 4 points for M8\/5\/16\" terminal rings) and pre-installed battery cables with Anderson connectors for easy stacking and installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eDIN Rail Heater Compatible:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Easy to add DIN rail thermostat for cold climates, maximizing battery lifecycles in low-temperature environments. Passive cooling vent also included for warm climates.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eFlexible Installation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Can be free-standing or pad mounted, offering versatility for residential, commercial, and industrial applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eAll-In-One Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes integrated busbars and battery cables with Anderson connectors for easy stacking, saving time and reducing installation complexity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e3-Year Warranty:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Backed by a 3-year warranty for peace of mind.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eUL9540 Certified:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Compliant with UL9540, UL9540A, UL1973, CEC, and SGIP standards.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetail\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Material\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCarbon Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Protection\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP54 (water and dust resistant, outdoor rated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Color\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWhite with Black\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eDimensions (W×H×D)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e29.88\" × 41.97\" × 17.83\" (759mm × 1066mm × 453mm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e153.2 lbs (69.6 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Batteries Per Unit\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 eFlex or 4 eFlex MAX\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eStorage Capacity Range\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.4 kWh – 21.6 kWh per unit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Storage Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e151.2 kWh (7 units in parallel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eKnockout Size\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLeft: 2\" (1), Right: 2\" (1)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePositive Battery Busbar\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 points; M8 (5\/16\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eNegative Battery Busbar\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 points; M8 (5\/16\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePositive\/Negative Busbars to Inverter\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 points each; M10 (3\/8\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eBattery Cables\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 sets of \"+\" and \"-\" #4 battery cables with Anderson connectors\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eTerminal Torque\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.0 – 7.7 Nm (5.1 – 5.7 ft-lb)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 Years\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eCertifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUL9540, UL9540A, UL1973, CEC, SGIP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Documents\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan\u003eInstallation Manual:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0079\/6003\/5417\/files\/450-0192_Installation_Manual.pdf?v=1777580590\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cspan\u003eDownload Manual\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan\u003eData Sheet:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0079\/6003\/5417\/files\/450-0192_Data_Sheet.pdf?v=1777580591\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cspan\u003eDownload Data Sheet\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2026-04-30T14:25:32-06:00","created_at":"2026-04-30T14:25:32-06:00","vendor":"SolarPanelStore","type":"Battery Enclosures","tags":[],"price":178200,"price_min":178200,"price_max":178200,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":49480415248623,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"DuraRack","requires_shipping":true,"taxable":false,"featured_image":null,"available":true,"name":"Fortress Power DuraRack Energy Storage Enclosure for eFlex \/ eFlex MAX Batteries","public_title":null,"options":["Default Title"],"price":178200,"weight":45359,"compare_at_price":null,"inventory_management":null,"barcode":"450-0192","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.solarpanelstore.com\/cdn\/shop\/files\/FortressPowerDuraRackBatteryEnclosure.jpg?v=1777580743"],"featured_image":"\/\/www.solarpanelstore.com\/cdn\/shop\/files\/FortressPowerDuraRackBatteryEnclosure.jpg?v=1777580743","options":["Title"],"media":[{"alt":null,"id":38728193638639,"position":1,"preview_image":{"aspect_ratio":0.786,"height":557,"width":438,"src":"\/\/www.solarpanelstore.com\/cdn\/shop\/files\/FortressPowerDuraRackBatteryEnclosure.jpg?v=1777580743"},"aspect_ratio":0.786,"height":557,"media_type":"image","src":"\/\/www.solarpanelstore.com\/cdn\/shop\/files\/FortressPowerDuraRackBatteryEnclosure.jpg?v=1777580743","width":438}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eExpand your energy storage with the new Fortress Power DuraRack! This enclosure stores up to 4 eFlex or eFlex MAX 5.4kWh batteries. The DuraRack paired with multiple eFlex or eFlex MAX batteries can build a 48V UPS server rack or provide storage capacity to home solar arrays. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan\u003eThe DuraRack includes integrated busbars and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features \u0026amp; Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eExpandable Energy Storage:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Holds up to 4 eFlex or eFlex MAX 5.4kWh batteries per unit, with storage capacity ranging from 5.4kWh to 21.6kWh per unit. Expandable up to 7 units for a total of 28 eFlex batteries and 151.2 kWh of storage capacity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eIP54 Water and Dust Resistant:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rated for both indoor and outdoor installation, providing protection against dust and water splashes for reliable performance in various environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eIntegrated Busbars:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes positive and negative battery busbars (2 × 4 points for M8\/5\/16\" terminal rings) and pre-installed battery cables with Anderson connectors for easy stacking and installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eDIN Rail Heater Compatible:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Easy to add DIN rail thermostat for cold climates, maximizing battery lifecycles in low-temperature environments. Passive cooling vent also included for warm climates.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eFlexible Installation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Can be free-standing or pad mounted, offering versatility for residential, commercial, and industrial applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eAll-In-One Design:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Includes integrated busbars and battery cables with Anderson connectors for easy stacking, saving time and reducing installation complexity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003e3-Year Warranty:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Backed by a 3-year warranty for peace of mind.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan\u003eUL9540 Certified:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Compliant with UL9540, UL9540A, UL1973, CEC, and SGIP standards.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within _1210dd7 c03cafe9\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetail\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Material\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCarbon Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Protection\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP54 (water and dust resistant, outdoor rated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEnclosure Color\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eWhite with Black\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eDimensions (W×H×D)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e29.88\" × 41.97\" × 17.83\" (759mm × 1066mm × 453mm)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e153.2 lbs (69.6 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Batteries Per Unit\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 eFlex or 4 eFlex MAX\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eStorage Capacity Range\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.4 kWh – 21.6 kWh per unit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eMaximum Storage Capacity\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e151.2 kWh (7 units in parallel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eKnockout Size\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLeft: 2\" (1), Right: 2\" (1)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePositive Battery Busbar\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 points; M8 (5\/16\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eNegative Battery Busbar\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 points; M8 (5\/16\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003ePositive\/Negative Busbars to Inverter\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 points each; M10 (3\/8\") terminal rings\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eBattery Cables\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 sets of \"+\" and \"-\" #4 battery cables with Anderson connectors\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eTerminal Torque\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.0 – 7.7 Nm (5.1 – 5.7 ft-lb)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 Years\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eCertifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUL9540, UL9540A, UL1973, CEC, SGIP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Documents\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan\u003eInstallation Manual:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0079\/6003\/5417\/files\/450-0192_Installation_Manual.pdf?v=1777580590\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cspan\u003eDownload Manual\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e\u003cspan\u003eData Sheet:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0079\/6003\/5417\/files\/450-0192_Data_Sheet.pdf?v=1777580591\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003cspan\u003eDownload Data Sheet\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e"}

Fortress Power DuraRack Energy Storage Enclosure for eFlex / eFlex MAX Batteries

Product Description
$1,782.00
Maximum quantity available reached.

Expand your energy storage with the new Fortress Power DuraRack! This enclosure stores up to 4 eFlex or eFlex MAX 5.4kWh batteries. The DuraRack paired with multiple eFlex or eFlex MAX batteries can build a 48V UPS server rack or provide storage capacity to home solar arrays.

The DuraRack includes integrated busbars and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations.


Key Features & Benefits

Expandable Energy Storage: Holds up to 4 eFlex or eFlex MAX 5.4kWh batteries per unit, with storage capacity ranging from 5.4kWh to 21.6kWh per unit. Expandable up to 7 units for a total of 28 eFlex batteries and 151.2 kWh of storage capacity.

IP54 Water and Dust Resistant: Rated for both indoor and outdoor installation, providing protection against dust and water splashes for reliable performance in various environments.

Integrated Busbars: Includes positive and negative battery busbars (2 × 4 points for M8/5/16" terminal rings) and pre-installed battery cables with Anderson connectors for easy stacking and installation.

DIN Rail Heater Compatible: Easy to add DIN rail thermostat for cold climates, maximizing battery lifecycles in low-temperature environments. Passive cooling vent also included for warm climates.

Flexible Installation: Can be free-standing or pad mounted, offering versatility for residential, commercial, and industrial applications.

All-In-One Design: Includes integrated busbars and battery cables with Anderson connectors for easy stacking, saving time and reducing installation complexity.

3-Year Warranty: Backed by a 3-year warranty for peace of mind.

UL9540 Certified: Compliant with UL9540, UL9540A, UL1973, CEC, and SGIP standards.


Technical Specifications

Specification Detail
Enclosure Material Carbon Steel
Enclosure Protection IP54 (water and dust resistant, outdoor rated)
Enclosure Color White with Black
Dimensions (W×H×D) 29.88" × 41.97" × 17.83" (759mm × 1066mm × 453mm)
Weight 153.2 lbs (69.6 kg)
Maximum Batteries Per Unit 4 eFlex or 4 eFlex MAX
Storage Capacity Range 5.4 kWh – 21.6 kWh per unit
Maximum Storage Capacity 151.2 kWh (7 units in parallel)
Knockout Size Left: 2" (1), Right: 2" (1)
Positive Battery Busbar 4 points; M8 (5/16") terminal rings
Negative Battery Busbar 4 points; M8 (5/16") terminal rings
Positive/Negative Busbars to Inverter 2 points each; M10 (3/8") terminal rings
Battery Cables 4 sets of "+" and "-" #4 battery cables with Anderson connectors
Terminal Torque 7.0 – 7.7 Nm (5.1 – 5.7 ft-lb)
Warranty 3 Years
Certifications UL9540, UL9540A, UL1973, CEC, SGIP

Product Documents

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