Fortress E-Flex 5.4kWh LFP battery at 48VDC

Fortress Power
Category: Battery
The Fortress Power eFlex 5.4 kWh 48Vis a scalable energy storage battery solution with high efficiency, high durability, which uses the safest battery technology; Lithium Ferro Phosphate
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Fortress E-Flex 5.4kWh LFP battery at 48VDC

This 5.4kWh 48V 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 from 5.4 kWh to 81 kWh for residential, commercial, railway, military and telecommunications 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


  • Battery Type: Lithium Ion
  • Battery Voltage: 48V
  • Battery amp Hours: 105AH
  • Battery Storage kWh: 5.4kWh

  • Item Code: Fortress eFlex

View Warranty Info

Warranty Info:

Period - 10 Year Limited Warranty
Registered/ Certified installers

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