Fortress Power FlexTower with Envy True 12kW Inverter and eFlex Batteries

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

Flexible & Easy Install

• 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

Highest Reliability for Maximal Protection

• 8000+ cycle life with tier 1 Automotive Lithium Iron Phosphate (LFP) battery
• Easily scaled to meet all large residential and commercial electricity needs

Whole Home Backup with 200A Grid Pass-through

• 200A Pass-through eliminates backup panel requirement
• Saves time on inverter wiring
• Includes battery cables and combiner for additional savings

 Highest Roundtrip Efficiency to Maximize Your Solar Investment

• >98% Battery Efficiency
• 5% CEC-Rated Inverter Efficiency
• Compatible with Din-Rail Heaters to maximize lifecycles in cold climates