Fortress Power, FlexTower, Top enclosure holds Envy inverter, Bottom enclosure: DuraRack; holds up to 4 eFlex units
Manufacturer Info
FlexTower
Full-System Enclosure
The FlexTower is for your integrated energy storage system. Built on the foundation of the DuraRack battery cabinet, the FlexTower combines the battery, charge controller, and inverter into a single unit with an LCD control panel, and remote monitoring capability. The FlexTower is easy to install and carries IP65/NEMA3R ratings for indoor or outdoor use.
Full-System Enclosure
The FlexTower is for your integrated energy storage system. Built on the foundation of the DuraRack battery cabinet, the FlexTower combines the battery, charge controller, and inverter into a single unit with an LCD control panel, and remote monitoring capability. The FlexTower is easy to install and carries IP65/NEMA3R ratings for indoor or outdoor use.
- FlexTower Data Sheet | Download
- FlexTower Installation Manual | Download
- Flextower/Durarack UL9540 | Download
- Inverter, charge controller, LCD Control Panel, Battery and remote monitoring app integrated in one unit
- Supports Off-grid, Back-up, Zero Export, Time-of-Use, Demand Response, Peak Shaving, and Virtual Power Plant
- IP65 water and dust proof for indoor & outdoor installation. NEMA3R
- AC or DC couple to existing or new PV arrays
- Optional Rapid Shutdown Button Included
- Side knockouts sized for solar, grid, and generator wiring
- 8000+ cycle life with tier 1 Automotive Lithium Iron Phosphate (LFP) battery
- Easily scaled to meet all large residential and commercial electricity needs
- 200A Pass-through eliminates backup panel requirement
- Saves time on inverter wiring
- Includes battery cables and combiner for additional savings
- >98% Battery Efficiency
- 5% CEC-Rated Inverter Efficiency
- Compatible with Din-Rail Heaters to maximize lifecycles in cold climates
| DuraRack Specifications | |
| 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 |
