Fortress Power | FlexTower - Inverter + Battery Enclosure
The FlexTower stands as a complete energy storage solution, integrating the DuraRack battery cabinet's sturdy framework with a built-in battery, charge controller, and inverter. This all-in-one unit features an LCD control panel and remote monitoring functionality. Installation is straightforward, and it boasts IP65/NEMA3R ratings, suitable for both indoor and outdoor applications.
Key Features
All-in-One Solution
- The unit integrates an inverter, charge controller, LCD control panel, battery, and remote monitoring app in a single package.
- It supports various modes including off-grid, backup, zero export, time-of-use, demand response, peak shaving, and virtual power plant.
Flexible & Easy Install
- The unit is IP65 water and dust proof, suitable for both indoor and outdoor installation, with a NEMA3R rating.
- It can be AC or DC coupled to existing or new PV arrays.
- An optional rapid shutdown button is included
- Side knockouts are sized for solar, grid, and generator wiring.
Highest Reliability for Maximal Protection
- The system boasts an 8000+ cycle life with tier 1 Automotive Lithium Iron Phosphate (LFP) battery technology.
- It can be easily scaled to meet all large residential and commercial electricity needs.
Whole Home Backup with 200A Grid Pass-through
- The 200A Pass-through feature removes the need for a backup panel.
- Saving time on inverter wiring.
- It also comes with battery cables and a combiner, offering additional savings.
- >98% Battery Efficiency
- 5% CEC-Rated Inverter Efficiency
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Compatible with Din-Rail Heaters to maximize lifecycles in cold climates
Specifications
| 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 units 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 Inverter | 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 |
Downlaods
FlexTower Data SheetFlexTower Installation Manual
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Frequently Asked Questions
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