Fortress Power | eFlex 5.4kWh LFP Battery
Overview
The Fortress Power eFlex offers a scalable energy storage solution with a capacity of 5.4 kWh, powered by secure and energy-dense prismatic Lithium Iron Phosphate cells. Its digital processor Battery Management System (BMS) incorporates high-amperage contactor disconnects and advanced Closed-Loop inverter communication. It also includes individual cell voltage monitoring, temperature monitoring, and cell balancing to optimize reliability and longevity.
With Canbus, Modbus, and WiFi communication capabilities, it aligns with internet-of-things standards. The IP65-rated case ensures protection against direct water spray and dust ingress from all angles. It offers versatile mounting options including wall, floor, and server rack mounting, suitable for diverse applications such as renewable energy, marine, RV, mobile, telecom, railway, and more.
Included:
- Wall Mount Bracket
Key Features
- Durable and reliable battery for daily use
- Uses safe Lithium Iron Phosphate (LiFePO4) technology
- Boasts 98% round trip efficiency
- Offers various mounting choices
- Allows for remote monitoring via WiFi, Modbus, and Canbus
- BMS ensures monitoring and balancing of individual cells
- NRTL certified to UL9540 and UL9540a standards
Specifications
| General | |
| Name | eFlex 5.4 |
| Total Energy(kWh) | 5.4 |
| Max. Charge Current (Continuous) [A] | 100 |
| Max. Discharge Current (Continuous) [A] | 60 |
| Max. Pulse Current (for 5 sec) [A] | 130 |
| Capacity [Ah] | 105 |
| Voltage Range [V] | 48-55 |
| Charging Temperature [F] | 32 to 113 |
| Discharging Temperature [F] | 32 to 140 |
| Storage Temperature [F] | 32 to 95 |
| Dimension [L x W x H, inch] | 21.5 x 17.5 x 7.2 |
| Weight [lbs] | 116 |
| Life Cycles | 8000 @ 80% DoD |
| Round Trip Efficiency | >98% |
Warranty
Downloads
Datasheets
eFlex Data Sheet
eFlex SPANISH Data Sheet
eFlex SPANISH Brochure
Installation Guides
eFlex Owner / Installation Manual
Inverter Guides
Firmware
Certifications
UL9540 / UL1973 Certificate
UL9540a Large Scale Fire Test Report
Racking Details
DuraRack Manual
Flexrack Technical Notes
Customer Server Rack Guide
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