Fortress Power, FlexTower (inverter + battery enclosure), Top enclosure holds Envy & Sol-Ark inverter, Bottom enclosure: DuraRack; holds up to 4 eFlex units
Manufacturer Info
FlexTower All-in-One Energy Storage System
The FlexTower is an all-in-one 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. All-in-One Solution
The FlexTower is an all-in-one 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. All-in-One Solution
- 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
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 |
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