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Fortress Power | eFlex 5.4kWh LFP Battery

SKU: eFlex 5.4kWh LFP Battery
$2,583.00 $3,199.00
Shipping calculated at checkout.

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Lifetime Customer Support

When you invest in a solar kit, you want to have peace of mind knowing that you have all the support you need to ensure that it’s always working properly.

At Solar Sovereign, providing legendary customer support is at our core, so we provide all of our customers with lifetime support.

This means that anytime you have a question, concern or are troubleshooting - you’ll have timely access to solar (and human) experts that can help you.

Call Us: (469) 405-4423
Email Us: sales@solarsovereign.com

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Discover significant savings with the government's 30% Solar Tax Credit, a lucrative incentive designed to help you reduce the cost of installing solar energy systems. This generous credit empowers you to harness the power of the sun while simultaneously making a positive impact on the environment.

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Contact Us:
Call: (469) 405-4423
Email: sales@solarsovereign.com

Frequently Asked Questions

What countries do you ship to?

We currently ship to the United States, To enquire about shipping to a different destination, please contact us.

How long will it take to receive my order?

Standard freight shipping normally takes 5-7 business days.

For remote locations 7-15 business days.

What carriers do you use?

We usually use, FedEx Freight, RL Carriers, ABF Freight, Estes, Southeastern Freight Lines, and many more!

We're happy to accommodate special carrier requests

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Items must be returned within 30 days after receiving your order. Items must be returned in the same condition in which they were received, be unworn/unused, have any tags still attached, and include all the original packaging.

Please see individual product page for more specific details, returns vary for each product.

How long will it take to receive my refund?

Refunds are processed within 7 days from when we receive the item(s).

Where do the products ship from?

Most of our products ship from the Dallas Fort-Worth area. If you'd like to know the specific location a product will ship from, please don't hesitate to ask. We're here to provide you with all the information you need!

Where are you guys based out of?

We are based out of Dallas Texas!

Fortress Power | eFlex 5.4kWh LFP Battery
Fortress Power

Fortress Power | eFlex 5.4kWh LFP Battery

$2,583.00 $3,199.00

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

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

Warranty

Shipping

Order Confirmation:

As soon as you place your order, you will receive an order confirmation email. This means that we have received your order in our system and pre-authorized your credit card for the purchase. As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment. If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at sales@solarsovereign.com.

No Shipping outside the USA.

Shipping Options

Our base "Curb-side" Pickup shipping is usually completely free! This option usually takes between 5-15 days to arrive at your doorstep, after you have submitted your order. There are other options available, however. We also offer the below options for some products. Please contact us for more information about these prior to ordering.

Threshold Shipping: This involves the item being brought onto your porch, or into a sheltered/garage area.
White Glove Delivery: This includes the item being brought into your room of choice, any minor assembly, and all boxes and packaging removed from your house!

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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