Fortress Power DuraRack For The Fortress eFlex 5.4 kWh Lithium Batteries


This product is just the Enclosure, it does not include batteries. Please look at the eFlex 5.4 battery.

In stock

Fortress Power DuraRack Enclosure

This battery enclosure can only ship via freight truck. If you have any questions about shipping methods, please email us or call us at 800 383-0195.

Expand your energy storage with the new Fortress Power DuraRack! This iron enclosure stores up to 4 eFlex 5.4kWh batteries. The DuraRack paired with multiple eFlex 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.


  • IP65 Water and Dust resistant for both indoor and outdoor install
  • Includes integrated busbar for easy stacking
  • Easy to add Din rail thermostat for cold climates
  • Passive cooling vent for warm climates
  • Expandable up to units (15 eFlex batteries: total 81 kWh)


  • Enclosure Protection: IP65
  • Maximum Battery Unit: 4 eFlex 5.4
  • Storage Capacity Range: 5.4kWh - 21.6kWh
  • Dimensions H x W x D (in/mm): 29.29 x 41.34 x 18.03 / 744 x 1050 x 458
  • Weight Without Batteries (lbs/kg): 153.2 / 69.6
  • Warranty: 3 years
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