Fortress Envy 12kW Hybrid Inverter with Four eFlex 5.4 kWh Lithium Batteries

The Fortress Power Envy True 12 kW - a whole-home, all-in-one 12kW inverter solution. Paired with the Fortress Power eFlex 5.4 kWh, the eVault MAX 18.5 kWh or LFP-10 MAX batteries, the Envy features a 200A AC passthrough providing up to 12kW (50A @ 240V) or 10.4kW (50A @208V) of whole-home backup power or small commercial. The Envy features a built-in generator input with AC/DC coupling, on- and off-grid capabilities, plus a 3 MPPT output allowing for a maximum of 21 kW PV array. The Envy is equipped with a built-in APsmart Module Level Rapid Shutdown Transmitter and Button, along with Pre-built AC & DC breakers allowing for fast installation and commissioning. Use our online monitoring app to access your system from anywhere. The Fortress Power eFlex is a 5.4 kWh scalable energy storage solution based on safe and energy dense prismatic Lithium Iron Phosphate cells. The digital processor Battery Management System (BMS) includes high amperage contactor disconnects and advanced Closed-Loop inverter communication, as well as individual cell voltage monitoring, temperature monitoring, and cell balancing to maximize reliability and longevity. Canbus, modbus, and wifi communication enable internet-of-things compatibility. The IP65 case ensures direct water spray and dust will not penetrate the battery internals from all directions. The unit can be wall mounted, floor mounted, and server rack mounted for hard-to-reach access in renewable, marine, RV, mobile, telecom, railway applications and more. DuraRack Indoor & Outdoor for Fortress eFlex 5.4 kWh Lithium batteries - 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.

Features

• All-In-One Solution (PV, Generator, On/Off Grid, AC/DC Coupling)
• Whole Home 200A AC Passthrough and Backup
• Max. 18 kW PV Power Delivered to Battery & AC Outputs
• 12 kW (50A @240V) Backup Power
• Integrated AC & DC Breakers for Fast Installation & Commissioning
• Built-in APsmart Rapid Shutdown Transmitter and Button
• 200A AC passthrough current for whole home backup
• 3 MPPT output for max. 21 kW PV array
• AC, DC and AC/DC combined coupling
• IP65 rated for Indoor & Outdoor Installation
• Built-in Generator Input
• 5 units in parallel
• Local and remote monitoring/app
• Color LCD touch screen
• Batch settings
• Tier 1 Automotive Prismatic Lithium Iron Phosphate Cell with the highest cycle life
• Patented Enclosure design achieves 4 times better thermal performance than our competitors
• IP 65 Dust and Water Proof design for outdoor install
• Flexible mounting options (wall mount, floor-stand or standard 19" industrial server rack mount)
• NEMA 3R Water and dust assistant for both indoor and outdoor install
• Includes integrated busbars and battery cables for easy stacking
• Easy to add din rail thermostat for cold climates
• Passive cooling vent for warm climates
• Expandable up to 4 units (15 eflex batteries; total 81 kwh)
  

Specifications

• Here’s a bullet-pointed version of the updated specifications:

  • Type: Whole Home
  • Series/Model: Envy True 12

  Dimensions

  • Inverter: 31.1 x 20.5 x 10.4 in

  Input DC (PV Side)

  • Maximum DC Input Power for Single MPPT: 12000/7000/7000 W (1 x 12 kW, 2 x 7 kW)
  • Maximum PV Power: 21000 W
  • Maximum PV Power Delivered to Battery & AC Outputs: 18000 W
  • DC Input Voltage Range: 100-600 V (550 V Maximum Recommended)
  • Nominal DC Input Voltage: 360 V
  • Full Power MPPT Voltage Range: 230-500 V
  • Maximum DC Input Current: 25 A/15 A/19 A
  • Maximum Short Circuit Input Current: 31 A/19 A/19 A
  • MPPT Number/(Strings Per MPPT): 3 (2/1/1)

  Output/Input AC (Grid)

  • Continuous AC Power to Grid: 12000 W (240 V) / 10400 W (208 V)
  • Continuous AC Power to Load with Grid or Generator: 48000 W (240 V) AC Passthrough / 21000 W GEN
  • Nominal Output Voltage: 120/240 V
  • Maximum Continuous AC Current: 50 A at 240 V
  • Nominal AC Frequency: 50/60 Hz

  Output AC (Off-Grid)

  • Maximum Output Power: 12000 W (240 V) / 10400 W (208 V)
  • Nominal Output Voltage: 120/240 V
  • Nominal Output Frequency: 50/60 Hz
  • Nominal Output Current: 50 A at 240 V
  • Peak Power:
    • 14 kW (10 minutes)
    • 16 kW (5 minutes)
    • 20 kW (500 ms)
  • Switching Time: <20 ms
  • Dedicated Auto-Start Generator Port: 100 A Maximum / 90 A Continuous

  Battery

  • Compatible Battery Type: Lithium & Lead Acid Batteries
  • Nominal Battery Voltage: 48 V
  • Battery Voltage: 48-56 V
  • Total Energy: 21.6 kWh (4 x 5.4 kWh)
  • Maximum Charge Current (Continuous): 100 A
  • Maximum Discharge Current (Continuous): 60 A
  • Maximum Pulse Current (5 s): 130 A
  • Capacity: 105 Ah
  • Charging Temperature: 32-113°F (0-45°C)
  • Discharging Temperature: 32-140°F (0-60°C)
  • Storage Temperature: 32-95°F (0-35°C)
  • Life Cycles: 8000 at 80% DoD
  • Round Trip Efficiency: >98%

  Efficiency & Protection

  • MPPT Efficiency: 99.9%
  • Maximum Efficiency: 97.5%
  • CEC Efficiency: 96.5%
  • Anti-Islanding Protection: Yes
  • DC Switch: Yes
  • Enclosure Rating: NEMA 4X, IP65
  • SPD Protection: Yes
  • AFCI: Yes
  • RSD: Built-In APsmart Transmitter

  Other Features

  • Display Type: Color LCD
  • Ambient Temperature Rating: -20 to 60°C
  • Cooling: Fan
  • Communication: RS485 / Wi-Fi / CAN

  Includes

  • Inverter
  • (4) eFlex G2 5.4 kWh Batteries
  • Durarack Enclosure

  Standards

  • UL1741, UL1741SB, IEEE1547A, Rule 21, ISO-NE, FCC15 class B, HECO, CEC, Luma

  Warranty

  • 10 Years Limited

  Weight

  • Inverter: 127 lb

  Applications

  • Backup
  • Off-Grid
  • Zero Export
  • Time-Of-Use
  • Peak Shaving
  • Smart Load
  • Net Metering
  • Virtual Power Plant Ready
  • Microgrid

Documents 

• Specification Sheet
• Instruction/Installation Manual
• Warranty Information
• Certificate