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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 digital processor Battery Management System (BMS) includes high amperage contactor disconnects and advanced Closed-Loop inverter communication, as well as individual cell voltage monitoring, temperature monitoring, and cell balancing to maximize reliability and longevity.
Canbus, modbus, and wifi communication enable internet-of-things compatibility. The IP65 case ensures direct water spray and dust will not penetrate the battery internals from all directions. The unit can be wall mounted, floor mounted, and server rack mounted for hard-to-reach access in renewable, marine, RV, mobile, telecom, railway applications and more.
Key Features:
- Rugged, Long-lasting, Daily Use Battery
- Safe Lithium Iron Phosphate Technology (LifeP04)
- 98% Round Trip Efficiency
- Flexible Mounting Options
- Remote Monitoring including wifi, modbus, and canbus
- BMS Monitors & Balances Individual Cells
- NRTL certified to UL9540 and UL9540a standards
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| 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% |
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Datasheets
eFlex Data Sheet
eFlex Data Sheet (Spanish)
eFlex Brochure (Spanish)
Installation Guides/Warranty
Warranty
eFlex Owner/Installation Manual
Inverter Integration Guides (How to Configure Your Inverter/Charger)
Firmware
Certifications
UL9540/UL1973 Certificate
UL9540A Large Scale Fire Test Report
Racking Details
DuraRack Manual
Customer Server Rack Guide
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Shipping is typically through freight carriers and the actual shipping time is contingent on your location and the specific warehouse dispatching your order. Please allow for a 1-3 business day processing period before shipment, and an estimated delivery time of up to 7 business days. Your confirmation email will include delivery details and we will send you a tracking number as soon as one is available. If you ordered several separate items, you may receive multiple tracking numbers. Once the item has been shipped, the freight service will contact you to coordinate the date and time of delivery. If you require any special accommodations during delivery please let us know as soon as possible and let the delivery company know when arranging the appointment.
Typically, orders will be dropped off either curbside or outside your front door or garage. It is your responsibility to bring the order inside or to its final destination and to remove any existing items.
Depending on the item, parts may be shipped in multiple boxes, and assembly may be required. When your order is delivered, please check that you have all pieces of the item and that nothing is damaged. If your order is damaged during transit and external damage is visible, note the damage immediately, write it on the delivery documents, take photos and/or videos, and refuse shipment. If there is no visible external damage, accept the package but note “subject to concealed damage” on the delivery documents. Any damage upon delivery needs to be reported within 24 hours of delivery or you may not be eligible for a refund. For additional information on submitting claims, as well as incorrect item exchanges, and replacements, please see our Refund Policy.
For more information about shipping, please visit our complete Shipping Policy.
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Why Shop With Eco Emperor?
At Eco Emperor, our mission is to empower you to lead a sustainable lifestyle with ease and confidence. Here’s why choosing us for your eco-friendly and solar products is a decision you can feel great about:
Expert and Customized Care
Our knowledgeable and friendly team is here to support you every step of the way. We pride ourselves on providing personalized service and swift responses to ensure a smooth and satisfying experience.Our dedicated team is available via phone, email, and live chat to provide you with prompt and helpful support.
Authorized Retailer of High-Quality, Trusted Products from Leading Brands
We partner with the best brands in the industry to bring you reliable, high-quality products. As authorized retailers, we guarantee authenticity and offer full manufacturer warranties on every item. You can trust that our products are built to last and perform efficiently.
Fast Shipping
We’re sure you want to start your solar projects immediately, so we are committed to quick shipping and delivery so you get your products promptly and in perfect condition.
Competitive Pricing
We believe that sustainable living should be accessible to everyone. We offer competitive pricing on all our products, so you can enjoy high-quality eco-friendly solutions without breaking the bank.
Choose Eco Emperor for your solar and eco-friendly needs and become part of a movement that’s making a real difference. Thank you for supporting a greener, cleaner future.
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