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Fortress Power Durarack with 4 eFlex Batteries - IP65 Outdoor Rated Enclosure with 4 eFlex Units Included, Total Capacity of 21.6 kWh

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Original price $15,199.00
Original price $15,199.00 - Original price $15,199.00
Original price $15,199.00
Current price $13,679.99
$13,679.99 - $13,679.99
Current price $13,679.99


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Fortress Power Durarack with 4 eFlex Batteries - IP65 Outdoor Rated Enclosure with 4 eFlex Units Included, Total Capacity of 21.6 kWh

Introducing the Fortress Power Durarack - the ultimate outdoor energy storage solution for your home or business. The Durarack is an IP65 rated enclosure that can hold up to 4 eFlex batteries, providing you with a total capacity of 21.6kWh. This high-performance energy storage system is designed to provide reliable and sustainable power backup for extended periods, even in harsh outdoor environments.


  • IP65 rated outdoor enclosure
  • Holds up to 4 eFlex batteries, providing a total capacity of 21.6kWh
  • Lithium iron phosphate (LFP) technology for long-lasting performance
  • Advanced battery management system for optimal performance and safety
  • Easy to install and maintain
  • Compatible with a wide range of solar inverters and charge controllers
  • Designed to withstand harsh environments and extreme temperatures
  • UL9540 and UN38.3 safety certifications
  • 10-year warranty for added peace of mind.
  • Comes with 4 eFlex units included

With the Fortress Power Durarack, you can rest easy knowing that your energy needs are fully covered, even during power outages. This powerful and durable energy storage system is the perfect addition to any solar panel system, providing you with reliable and sustainable energy storage for years to come. The Durarack is an ideal choice for those who need an outdoor rated energy storage solution and want to save on the cost of purchasing the batteries separately.


Enclosure Material Carbon Steel
Enclosure Protection IP65 water and dust proven (outdoor)
Enclosure Color White
Dimensions [W x H x D] 29.29 x 41.34 x 18.03 in (744 x 1050 x 458 mm)
Enclosure Weight 59.6 kg / 153.2 lbs
Maximum Battery Units 4 eFlex 5.4
Storage Capacity Range 5.4kWh - 21.6 kWh per unit
Max. Storage Capacity 81 kWh (4 unites in parallel)
Knockout Size 1inch & 2 inch
Positive and Negative Battery Busbars 2 x 4 points; M8 (5/16) Terminal Rings
Positive and Negative Busbars to Inveter 2 points; m10 (3/8) Terminal Rings
Battery Cables 4 sets of
Terminal Torque 7.0 - 7.7 Nm (5.1 - 5.7 ft-lb)
Enclosure Warranty 3 Years
Certifications UL9540, UL9540A, UL1973, CEC, SGIP

Order shipment preparation takes 3 days. Once shipped orders usually take 2 weeks to be delivered. These are estimations; delivery can be delayed for reasons beyond our control. You can always contact us to know the exact delivery time once you placed an order with us. Have a look at our shipping policy here.