Fortress eFlex 5.4 Lithium 48V LiFePO4

More Information
Item Number: FOP-5400
Last Price Update: 01/10/2022
Manufacturer: Fortress Power
Made In: China
Model Number: eFlex 5.4
Call 888-826-0939 for special equipment discounts.

Fortress eFLEX 5.4 LiFePO4 Battery

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 high amperage, smart Battery Management System (BMS) includes relay disconnects, closed-loop inverter communication, cell voltage and temperature monitoring, and cell balancing to maximize reliability and longevity, as well as Wi-Fi for internet-of-things compatibility. 

The Fortress eFlex 5400 can be FlexRack-Combiner rack mounted (four batteries), wall mounted, floor mounted, or server rack mounted.


98% Round Trip efficiency

High Durability and Long-Lasting

Safe Lithium Iron Phosphate Technology (LiFeP04)

Flexible mounting options

Remote monitoring

Advanced cell level monitoring and balancing

Close-loop communication with many hybrid inverters

Canbus, Modbus, and Wi-Fi communication

Weight: 123.0 lbs.

Dimensions: 21.5 × 17.5 × 7.2 in

Battery Amp Hours: 105 (Ah)

Battery Type: LFP (Lithium Ferro Phosphate)

Battery Voltage: 51.2VDC     

Battery Warranty: 10 Years

Call Us Toll Free 888-826-0939 with questions