Fortress Power eFlex Max 5.4kWh LFP Battery

Fortress Power eFlex Max 5.4kWh LFP Battery

Name: Fortress Power eFlex Max 5.4kWh LFP Battery
Brand: Fortress Power
SKU: eFlex Max 5.4
Price: 2524.99 USD
Availability: InStock

Sku: eFlex Max 5.4

$2,524.99

$4,375.00

- $1850

Buy Now, Pay Later

Perfect Companions

Description

Fortress Power eFlex Max 5.4kWh LFP Battery: Reliable Energy Storage

Experience peace of mind with high-performance energy solutions

The Fortress Power eFlex Max 5.4kWh LFP Battery is engineered to provide dependable, long-lasting power for your home, RV, boat, or off-grid cabin. With its robust lithium iron phosphate technology, this battery offers durability and efficiency, ensuring you stay powered even during outages. Generation Eco Store is here to help you select a battery solution that not only meets your energy needs but also fits your lifestyle with superior reliability and smart integration.

Why choose Fortress Power at Generation Eco Store?

Our team understands the importance of energy resilience and sustainability. We offer expert guidance on this compact, versatile battery pack designed to deliver 5.4kWh of clean energy while withstanding harsh conditions. Trust Generation Eco Store to support you in making an informed investment in a trustworthy, safe, and efficient energy storage system that will serve you for years.

Key Specifications

Specification	Values
Total Energy (kWh)	5.4
Max Charge Current (Continuous) [A]	100
Max Discharge Current (Continuous) [A]	100
Capacity [Ah]	105
Voltage Range [V]	48-55
Life Cycles @ 80% DoD	8000+
Round Trip Efficiency	>98%
Weight [lbs]	108

Specifications & Dimension

What's in the Box?

Fortress Power eFlex Max 5.4kWh LFP Battery Pack

Guides & More

Shipping Policy

Free & Fast Shipping
We offer free shipping on most Fortress Power Home Battery Backup orders across the lower 48 states, using the most reliable freight partners. Orders typically ship within 5 business days, with tracking provided within 24 hours of dispatch.
Tracking & Delivery Scheduling
You’ll receive an order confirmation email immediately after placing your order. Tracking details are usually shared within 3–5 business days. Please review your shipping address carefully—corrections after shipment may incur a fee.
Important Shipping Notes
Ensure your location can accommodate freight deliveries. Additional charges may apply for access-restricted areas, remote locations, or deliveries requiring special transport (e.g., ferry or plane).

See our full Shipping Policy here

Return Policy

Hassle-Free Returns
We offer a 30-day return window from the date you receive your item. Items must be unused, in original packaging, and accompanied by proof of purchase. Some items may incur a 15–25% restocking fee, especially larger freight-shipped products. Cancellations made before shipping will incur a 3-5% processing fee.
Damaged or Special Orders
Please report any damages within 24 hours of delivery. Installed or opened items may not be returnable. Select brands such as Victron and Pytes may be non-returnable based on manufacturer policies.

See our full Return Policy here

"What we'd tell a friend"

Compact & Versatile

Its compact form factor makes it easy to install in tight spaces, offering a versatile solution compatible with many solar inverters and charge controllers.

Long-lasting Performance

With lithium iron phosphate technology and an 8,000+ cycle life, this battery delivers sustained performance and energy savings over many years.

Robust Safety

The eFlex Max battery is equipped with built-in safety protections and holds important certifications to ensure reliable and safe operation in various environments.

See it in Action

Have a Question? We Have Answers

How long is the warranty on the Fortress Power eFlex Max 5.4kWh battery?

The eFlex Max 5.4kWh battery comes with a 7-year warranty, giving you added peace of mind for your energy investment.

What safety certifications does the Fortress Power eFlex Max battery have?

The Fortress Power eFlex Max battery has UL9540 and UN38.3 safety certifications, ensuring it meets high safety and quality standards.

Can the eFlex Max 5.4kWh battery be used in off-grid solar systems?

Yes, the eFlex Max 5.4kWh battery is designed for flexible applications, including off-grid solar systems, providing reliable and efficient energy storage.

What is the warranty on Home Battery Backup?

Warranty for product varies based on the brand and the product. For some of the warranties, https://generationecostore.com/pages/warranty view OEM warranty policy. For any questions, please reach out to us at [email protected]

Can I return the Home Battery Backup if I'm not satisfied?

We offer a 30-day return window from the date you receive your item. To be eligible for a return, the item must be unused, in its original packaging, and include proof of purchase.