Sol-Ark 12K + Fortress Power eFlex Battery + Fortress Durarack Enclosure Bundle

The Sol-Ark 12k is a great choice stackable solar/hybrid inverter! It's an all-in-one, pre-wired inverter with built in charge controllers and many other built-in feature fitted as standard. It is flexible, efficient, and affordable. Everything you need comes in one box, keeping your cost LOW and installation SIMPLE. 10-year standard Warranty. Fortress Lithium Ferro Phosphate (LFP) 51.2V(48V), 360 AH, 18.5 KWH total capacity, LCD display; max. 20 units in parallel for 370 KWH; 10 yrs warranty. Includes wall mount bracket (SKU Part Number EFlex 5.4 G2). Fortress Durarack IP65 Outdoor Rated Enclosure holds four eFlex units per rack. Includes busbars and 4 sets "+" and "-" battery cables. 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, wheels, and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations. 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, wheels, and a DIN rail heater mount. This enclosure can be free-standing or pad mounted and is safe for indoor and outdoor installations. We design the eFlex 5.4 with a goal of building the world most robust lithium battery for all different application scenarios and harish weather conditions.

Features

• Two built-in 500V charge controllers
• 1-6 PV strings
• Battery disconnect
• 48V Battery input
• Auto-generator start
• Rapid shutdown signal
• Built-in arc fault and ground fault detection
• Current sensors included
• Battery communication
• PV Disconnect
• Wiring knockouts an & Wi-Fi
• 50 A Breaker - AC In/Out, AC Load Out, AC Gen In/Smart Load Out
• 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
• Our market leading Digital Processor Battery Management System (BMS) includes: High amperage contactor disconnects, Individual cell voltage & temperature monitoring and balancing for maximum reliability and longevity, Canbus, Modbus, and Wi-Fi communication enable Internet-of-Things compatibility, Advanced closed loop communication with most 48V inverters
• IP65 water and dust resistant 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
• Built on wheels for easy movement and positioning
• Expandable up to 4 units (15 eflex batteries; total 81 kwh)
  

Specifications

• • Maximum Allowed PV Power (STC): 13,000 W
  • MPPT Voltage Range: 150-500 V
  • Startup Voltage: 125 V
  • Maximum DC Input Voltage: 500 V
  • Maximum Operating Input Current Per MPPT: 20 A (Self-Limiting)
  • Number of MPPT Trackers: 2
  • Number of PV Strings Per MPPT: 2
  • Maximum AC Coupled Input: 9,600 W

  Battery Specifications (DC):

  • Battery Chemistry: Lithium or Lead Acid
  • Nominal DC Voltage: 48 V
  • Operating Voltage: 43-63 V
  • Capacity: 50-9900 Ah
  • Maximum Battery Charge/Discharge Current: 185 A
  • Battery Disconnecting Means: 200 A/Pole x 2
  • Charging Controller: 3-Stage with Equalization
  • Grid to Battery Charging Efficiency: 96%
  • External Battery Temperature Sensor (BTS): Included
  • Automatic Generator Start (AGS): 2 Wire Start - Integrated
  • BMS Communication: CANBus & RS485 MODBUS

  AC Output Specifications:

  • Nominal AC Voltage: 120/240 V, 120/208 V, 220 V
  • Grid Frequency: 50/60 Hz
  • Real Power (Maximum Continuous): 9,000 W
  • Maximum Output Current: 37.5 A
  • Real Power (Maximum Continuous, Batteries Only): 16,000 VA at 240 V
  • Peak Apparent Power (100 ms, Off-Grid): 25,000 VA at 240 V
  • Maximum Output Fault Current (5 sec): 104 A
  • Maximum Grid Passthrough Current: 63 A (10 min)
  • Power Factor Output Range: ±0.9 Adjustable
  • Backup Transfer Time: 4 ms
  • CEC Efficiency: 96.5%
  • Maximum Efficiency: 97.5%
  • Design (DC to AC): Transformerless DC

  Additional Features:

  • Stackable: Up to 9 in Parallel for scalability.
  • Integrated Features:
    • PV DC Disconnect Switch (NEC 240.15)
    • Ground Fault Detection (NEC 690.5)
    • PV Rapid Shutdown Control (NEC 690.12)
    • PV Arc Fault Detection (NEC 690.11)
    • PV Input Lightning Protection
    • PV String Input Reverse Polarity Protection
    • AC Output Breaker (200 A)
    • Surge Protection: DC Type II / AC Type II
    • 250 A Battery Breaker/Disconnect
  • Enclosure Rating: IP65 / NEMA 3R, IP65 Water & Dust proven (Durarack Outdoor Enclosure)
  • Ambient Temperature Rating: -25 to 55°C (with derating above 45°C)
  • Noise Rating: <30 dB at 25°C
  • Idle Consumption (No-Load): 60 W

  Battery Storage:

  • Maximum Storage Capacity: 81 kWh (4 Units in Parallel)
  • Storage Capacity per Unit: 5.4-21.6 kWh per unit
  • Recommended Charge Voltage: 54.4 V
  • Maximum Surge Power Rate: 130 A (6.6 kW for 5 seconds)
  • Battery Low Voltage Protection: <45 V
  • Battery Recovery Voltage: <45 V

  Communication & Monitoring:

  • Wi-Fi & LAN Hardware Included for system monitoring and control.

  Certifications and Standards:

  • UL1741-2010/2018
  • IEEE1547a 2003/2014
  • FCC 15 Class B
  • UL1741SB, CA Rule 21, HECO Rule 14H
  • TUV, ETL, PV Cycle, MES, IEC
  • UL1973, UL1642, UN 38.3 CLASS 9, UL9540, UL9540A
  • CEC, SGIP

  Warranty and Weight:

  • Warranty: 10 Years Inverter, 3 Years Durarack Enclosure
  • Weight:
    • Inverter: 78 lb
    • Battery: 108 lb
    • Enclosure: 153.2 lb

Documents 

•  Specification Sheet 1
• Specification Sheet 2
• Specification Sheet 3