Description
The Fortress Power eFlex 5.4 is a 5.4 kWh 48V Lithium Ferro Phosphate (LFP) battery with a maintenance-free design. The Fortress Lithium Battery is easy to integrate with solar or for independent operation to deliver power to your home day or night. The eFlex is consistently reliable and will keep your solar system operating during a power outage, or use the energy stored from the daytime to power your home at night.
The eFlex 5.4 has 5.374 KWH total capacity that can expand up to 80 kWh with 15 units in parallel. Features include a 10 year warranty, built-in Wifi for on-line monitoring, close-loop communication with 48V inverters. The included battery management system integrates multi-level safety features including overcharge and deep discharge protection, voltage and temperature observation, cell monitoring and balancing, and a built-in accessible 125 Amp DC breaker On/Off switch.
This high-performance Fortress Lithium Battery has a large power capacity, with a fast charging and continuous discharge power, creating a 98% rough-trip conversion. The advanced Lithium Ferro Phosphate (LFP) technology operates a wider temperature range to deliver the most dependable performance. LFP has been proven to be one of the safest Lithium technologies in the industry and is manufactured to the highest standards.
Compatible with Fortress Power, Sol-Ark, and other 48V solar inverters, Fortress Power batteries are ideal energy storage solutions for grid-tied or off-grid solar installations. Lower your utility bill by avoiding the need to buy electricity at peak times with the Fortress Lithium Battery. Eligible for tax credits and rebates when used with solar, and backed by a 10-year warranty. Order online or by PHONE 888-498-3331
Product Highlights
- Provides power during grid outages
- Designed for backup power, time of use, self-use, and off grid applications
- Increases independence from the utility grid
- No maintenance and operation costs
- Built-in Battery Management System
- Easy to install with a compact design
- Built-in accessible 125 Amp DC breaker On/Off switch
- Eligible for tax credits and rebates when used with solar
- 10 year warranty
Parts / Specifications
Manufacturer: |
Fortress Power |
Model Number: |
eFlex 5.4 |
Technology: |
Lithium Ferro Phosphate (LFP) |
Total Energy (kWh): |
5.374kWh |
Capacity (Ah): |
105Ah |
Nominal Voltage (V): |
48V |
Voltage Range (V): |
44 - 58.4V |
Max. Charge Current (Continuous) (A): |
80A |
Max. Plus Current for 5Sec (A): |
180A |
Charge Temperature [°F/°C]: |
32 - 113 °F (0 °C to 55°C) |
Discharge Temperature [°F/°C]: |
32 - 140 °F (0 °C to 65°C) |
Recommend Storage Temperature [°F/°C]: |
41 - 113 °F (5 °C to 55°C) |
Dimension (W x D x H): |
18 x 23 x 7.3 in |
Weight (lbs/kg): |
108 lbs |
Enclosure Protection Rating: |
IP54 |
Mounting Options: |
Wall mount or floor standing rack (sold seperately) |
Certificates: |
UN3480, UL 1642, CE |
Warranty: |
10 years |
Life Cycle: |
6000 cycles @ 80% DoD |
Battery Breaker: |
125 A |
Efficiency: |
>98% |
Expansion: |
Maximum 15 in parallel |
Installation Instructions
Fortress Power eFlex 5.4 5 kWh LFP-5 battery datasheet
Fortress Power eFlex 5.4 5 kWh LFP-5 battery Installation Manual
