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Fortress-Power-DuraRack-eFlex_1 Fortress Power | DuraRack + eFlex $13,375.00
fortress power|SKU:7825460987

Fortress Power | DuraRack

Scale Your Off-Grid Power Safely

The Fortress Power DuraRack is the definitive foundation for your premium energy storage system, offering a robust and weather-resistant enclosure designed to safeguard your investment. Seamlessly expand your backup power capacity with the flexibility to scale up to an impressive 81kWh, all within a single, elegantly engineered iron frame. Experience the confidence of a truly resilient power solution, built for uncompromising performance both indoors and out.

Restaurant-grade performance — sear at 1,000°F+ with infrared burners
304 stainless steel construction — rust-resistant, built to last decades
Ships fully assembled — wheel it out, fire it up same day
10-year warranty standard — industry-leading coverage on all burners

$1,535.95

Out of stock

Fortress-Power-DuraRack
Fortress Power | DuraRack
$1,535.95

Scale Your Off-Grid Power Safely

The Fortress Power DuraRack is a vetted enclosure built to house up to four eFlex 5.4kWh batteries, giving you a solid foundation for a self-reliant energy system. Constructed from durable iron, this rack expands up to four units for a total of 81kWh. It includes integrated busbars and battery cables for straightforward stacking. With an IP65 rating for water and dust resistance, it handles indoor and outdoor setups effortlessly. This rack is a smart investment for anyone looking to stay grid-independent with a passive cooling vent and easy DIN rail heater integration for extreme climates. Ships free.

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IP65 Weather Protection
Integrated Busbars Included
All-Climate Ready
Expandable To 81kWh
4
Batteries Per Rack
4
Max Expandable Units
81kWh
Maximum System Capacity
Fortress-Power-DuraRack

Feature. . This ensures long-lasting durability and consistent performance in demanding conditions. Professional-grade materials and expert engineering come together to deliver a product you can rely on day after day, job after job. Every detail has been carefully considered to maximize your satisfaction and minimize downtime.

Fortress-Power-DuraRack-2

Feature. . This ensures long-lasting durability and consistent performance in demanding conditions. Professional-grade materials and expert engineering come together to deliver a product you can rely on day after day, job after job. Every detail has been carefully considered to maximize your satisfaction and minimize downtime.

Fortress-Power-DuraRack-3

Feature. . This ensures long-lasting durability and consistent performance in demanding conditions. Professional-grade materials and expert engineering come together to deliver a product you can rely on day after day, job after job. Every detail has been carefully considered to maximize your satisfaction and minimize downtime.

Compatibility & Sizing

Ensure your space meets these requirements for a secure installation.

  • Accommodates up to 4 eFlex 5.4kWh batteries per single enclosure
  • Space available for free-standing or pad-mounted installation
  • Environment rated for indoor or outdoor IP65 exposure

Built For Real-World Demand

Designed to adapt to your property and power needs.

Whole-Home Backup Systems
Remote Off-Grid Cabins
Solar Storage Expansion

Full specifications

At a glance

Dimensions
See product page
Warranty
See product page
Full specifications11 data points across 4 categories

Dimensions

Physical DimensionsSee product page
CapacityUp to 4 eFlex 5.4kWh batteries
Max ExpansionUp to 4 units (15 eFlex batteries; total 81 kWh)

Power & Performance

Total Capacity81kWh (when fully expanded)
CoolingPassive cooling vent for warm climates
HeatingEasy to add DIN rail thermostat for cold climates

Materials

ConstructionIron enclosure
Included HardwareIntegrated busbars and battery cables

Compliance & Warranty

RatingIP65 water and dust resistant
InstallationSafe for indoor and outdoor installations
WarrantySee product page

The Off Grid Vault Promise

We stand behind the gear we sell.

Vetted EquipmentEvery product meets our strict standards for build quality and real-world performance.
Free ShippingYour order ships free with no minimums or hidden conditions.
30-Day ReturnsNot the right fit? Return it within 30 days for a hassle-free refund.
★★★★★
“Outstanding quality and performance. The Fortress exceeded my expectations in every way.”
F
First L.United States

Fortress Power | DuraRack – Premium Battery Enclosure for Scalable Energy Storage

Maximize your energy independence with the Fortress Power DuraRack, a robust iron enclosure engineered to house up to 4 eFlex 5.4kWh batteries. Designed for seamless expansion, the DuraRack supports configurations of up to 4 interconnected units, accommodating a total of 15 eFlex batteries and delivering an impressive 81 kWh of backup power. Whether installed indoors or out, this versatile rack system ensures your energy storage is secure, organized, and ready for any climate. With integrated busbars and a DIN rail heater mount, the DuraRack simplifies installation while providing the durability and flexibility required for premium off-grid and backup power systems.

Key Features

  • IP65 Water and Dust Resistant – Certified for both indoor and outdoor installations, providing reliable performance in diverse environments.
  • Integrated Busbars and Battery Cables – Pre-installed components enable easy, tool-free stacking of eFlex batteries for a clean, professional setup.
  • DIN Rail Heater Mount (Ready) – Easily add a thermostat-controlled heater for reliable operation in cold climates, ensuring battery performance year-round.
  • Passive Cooling Vent – Built-in ventilation optimizes airflow for warm climates, maintaining safe operating temperatures without active cooling.
  • Expandable Up to 4 Units – Scale your system as energy needs grow: connect up to 4 DuraRack enclosures to support 15 eFlex batteries and a total capacity of 81 kWh.
  • Free-Standing or Pad-Mounted – Flexible installation options allow placement on the ground or a concrete pad, adapting to your space and structural requirements.

Specifications

  • Product: Fortress Power DuraRack
  • Compatible Batteries: Up to 4 eFlex 5.4kWh batteries per unit
  • Maximum System Expansion: Up to 4 units (15 eFlex batteries total)
  • Total Energy Capacity: Up to 81 kWh
  • Enclosure Material: Iron
  • Environmental Rating: IP65 (water and dust resistant)
  • Installation Options: Free-standing or pad-mounted
  • Climate Adaptations: Passive cooling vent (warm climates); DIN rail heater mount (cold climates)
  • Included Components: Integrated busbars and battery cables
  • Safety & Durability: Suitable for indoor and outdoor installations

Why Choose Fortress Power | DuraRack

Fortress Power is a trusted name in advanced energy storage, and the DuraRack embodies the brand’s commitment to quality, scalability, and ease of installation. Unlike generic shelving, this enclosure is purpose-built for eFlex batteries, with pre-integrated busbars and cables that reduce setup time and eliminate guesswork. Its IP65 rating means you can confidently install it in garages, basements, or exterior locations without worrying about moisture or dust. The expandable design future-proofs your investment—start with a single unit and scale up to 81 kWh as your energy demands increase. Whether you’re building a home backup system or a commercial off-grid solution, the DuraRack delivers the structural integrity and flexibility you need for a reliable, long-lasting power setup. Choose Fortress Power DuraRack for a premium, hassle-free path to energy independence.

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Frequently Asked Questions

The DuraRack is an iron enclosure that arrives ready for installation. It can be free-standing or pad-mounted. Shipping details are not specified in the product data; please contact our support team for freight and delivery options.
The DuraRack is designed specifically for Fortress Power eFlex 5.4kWh batteries. A single unit stores up to 4 eFlex batteries. It is expandable to 4 units, accommodating up to 15 eFlex batteries for a total capacity of 81 kWh.
The DuraRack is constructed from iron and features an IP65 water and dust resistant rating, making it safe for both indoor and outdoor installations. It includes a passive cooling vent for warm climates and a DIN rail heater mount for cold climates.
Maintenance involves periodic inspection of the enclosure, busbars, and battery cables for signs of wear or corrosion. Ensure the passive cooling vent remains unobstructed. No specific maintenance intervals are provided in the product data.
Return and warranty terms are not detailed in the provided product data. For support, please contact our customer service team for assistance with installation, compatibility, or troubleshooting.
The DuraRack is ideal for homeowners or businesses needing expandable, weather-resistant battery storage for off-grid or backup power systems. It suits both indoor and outdoor setups and works with Fortress Power eFlex batteries for scalable energy storage up to 81 kWh.
Yes, the DuraRack includes integrated busbars and battery cables for easy stacking and connection of eFlex batteries. A DIN rail heater mount is also included for cold climate thermostat installation.
Yes, the DuraRack is expandable up to 4 units, allowing you to start with a single enclosure and add more as needed. This supports up to 15 eFlex batteries (81 kWh total) for growing energy storage requirements.
SKU: 7825460987 Categories: , Brand:

The Off Grid Vault Promise

We stand behind the gear we sell.

Vetted Equipment Every product meets our strict standards for build quality and real-world performance.
Free Shipping Your order ships free with no minimums or hidden conditions.
30-Day Returns Not the right fit? Return it within 30 days for a hassle-free refund.

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About fortress power DuraRack

fortress power is a trusted manufacturer of premium durarack. OffGridVault is an authorized dealer offering the full fortress power lineup with free delivery, price match guarantee, and expert support.

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