Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery - Green Vista Living
Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery - Green Vista Living

Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery

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Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery - Green Vista Living

Fortress Power

Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery

$4,599.00 $3,599.00
Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery - Green Vista Living

Fortress Power

Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery

$4,599.00 $3,599.00
  • Description

Fortress Power eFLEX 5.4 kWh Lithium Iron Phosphate Battery

 

Fortress Power announces the eFlex 5.4 kWh scalable energy storage battery solution. The unit uses safe and high energy density prismatic Lithium-Iron-Phosphate cells. The battery has a built-in data storage and Wi-Fi for remote monitoring and troubleshooting ability. The smart relay-based Battery Management System (BMS), supports closed-loop communication with various 48V hybrid inverters on the market. Additionally, the BMS monitors and balances the voltage and temperature of each individual cell to maximize reliability and longevity. It has the highest round trip efficiency in the industry at 98%. This unit has wall mounting functionality and fits well into standard server racks for large systems.

High Durability and long-lasting: 10 Year Warranty with the safe and premium prismatic Lithium-Iron-Phosphate cells

Versatile Applications: Expandable up to 81 kWh for residential, commercial & industrial applications. Note that the minimum number of batteries depends on your inverter. Typically, a minimum of (3) batteries are recommended for home backup & off-grid applications.

Lowest Cost Per Cycle: High energy throughout with exceptional life span (6000+ cycles) and high round-trip efficiency (>99%)

Monitor from Anywhere: The battery has a built-in data storage Wi-Fi for remote monitoring and troubleshooting ability

Waterproof and saltwater resistant: The sleek-looking aluminum cabinet has IP65 waterproof rating to prevent salt-water corrosion

Specifications:

  • Total Energy: 5.376 kWh
  • Nominal Voltage: 51.2(48)V
  • Voltage Range: 45-58.4 V
  • Max. Charge Current(Continuous): 100 Amp / Recommended Charge Current: 55A
  • Max. Discharge Current(Continuous): 100 Amp / Recommended Continuous Discharge Rate: <68A
  • Recommend Storage temperature: 32 to 95 F
  • Charge temperature: 32 to 113 F
  • Capacity: 105 Amp-hour
  • Dimension(H x W x D): 7.2" x 17.5" x 21.5"
  • Weight: 116 lbs


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At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
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Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
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Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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