• A white Fortress Power eVault Max with LFP battery features a digital display (52.6V, -50.0A, 20.2% SOC, 0.62 MWh) on the front panel; this wheeled unit provides reliable, mobile energy storage.
  • A large, rectangular silver Fortress Power eVault Max LFP battery storage unit with a black top and digital display stands on four wheels against a plain white background.
  • A tall, rectangular Fortress Power eVault Max LFP Battery in silver and black with wheels, digital display, and open lid, designed for advanced energy storage, is shown against a plain white background.
  • A silver and black Fortress Power electronic cabinet stands on four wheels with its door open, showing internal components. The front panel features a screen and the words “Fortress Power eVault Max”; this unit is an LFP battery energy storage system.
1 4
9 people are viewing this right now

Fortress Power eVault MAX 18.5kWh 48V LFP Battery

SKU: FEV-MAX-185
Availability: Out of stock
$6,349.00
$7,139.00 $6,349.00
Sold out
  • FREE SHIPPING WITHIN USA On All Orders! (No shipping to HI, AK or Overseas Territories)
  • $0 SALES TAX For Most States (Except WY)
  • Have Questions? Call our Expert for Answers +1 307 317 7213

Best for

  • Home Backup
  • Off-Grid
  • Hybrid
  • Whole House
10-year manufacturer warranty Backed by Fortress Power. Full coverage details in the Description tab.

Secure Checkout:

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa
Shipping information

Shipping
information

Payment Icon

Return and
Refund Policy

Live Chat

Live Agent

Our Blog

Our blog
View full product details

Battery · 18,500Wh

Fortress Power eVault MAX 18.5kWh 48V LFP Battery

18,500WhBattery Capacity
48VSystem Voltage
98%Efficiency
10 yrWarranty
Overview

Overview

Discover the Fortress Power eVault Max 18.5kWh LFP Battery – your superior solution for home and business energy storage. Boasting a robust 18.5kWh capacity, this lithium iron phosphate (LFP) battery ensures that your power supply remains uninterrupted, safeguarding against any blackouts.

Features

Features

  • Extensive 18.5kWh energy capacity for enduring power backup
  • Utilizes durable Lithium iron phosphate (LFP) technology for prolonged lifespan and performance
  • Incorporates an advanced battery management system to enhance performance and ensure safety
  • Straightforward installation and low maintenance requirements
  • Broad compatibility with various solar inverters and charge controllers
  • Engineered to perform reliably in tough environments and extreme weather conditions
  • Certified with UL9540 and UN38.3 for safety assurance
  • Comes with a comprehensive 10-year warranty, providing long-term security and support.

Equip your solar energy system with the Fortress Power eVault Max 18.5kWh LFP Battery for dependable, eco-friendly energy storage that stands the test of time. For larger capacity setups or whole-home solutions, explore our full collection of big battery backups for home.

Data

Specifications

Total Energy (kWh) 18.5
Capacity [Ah] 360
Nominal Voltage [V] 51.2 (48)
Voltage Range [V] 48-55
Recommended Charge Current [A] 150
Max. Charge Current (Continuous) [A] 180
Max. Discharge Current (Continuous) [A] 180
Max. Pulse Current (for 10 sec) [A] 200
Charging Temperature [F] 32 to 120
Discharging Temperature [F] 4 to 77
Recommended Storage Temperature [F] 14 to 77
Dimension [H x W x D, inch] 20.3 x 20.3 x 42.2
Weight [lbs] 520
Enclosure Protection Rating IP55
Mounting options Floor standing
Certificates UL 1642, UL1973, UL9540
Warranty 10 Years
Scalability Maximum 20 in Parallel (370 kWh)
Communication CAN/RS485
High Current Circuit Breaker 250A
Efficiency >98%

Free shipping within the contiguous USA · $0 sales tax in most states · Questions? Call +1 307 317 7213

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Shipping information

Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders ship directly from our brand partners' warehouses across the U.S. Order confirmation is emailed immediately; if an item is unexpectedly backordered we notify you before your card is charged. In-stock items are processed within 1-4 business days (cut-off 4:00 PM EST), transit is 3-6 business days, and tracking is emailed within 24 hours of shipment. Typical delivery is 4-10 business days from purchase. Minimum order value is $69.

  • Carriers: FedEx, UPS, USPS, Estes, Roadrunner.
  • Freight deliveries to locations an 18-wheeler cannot reach, islands, or ferry/train access may incur additional carrier charges - tell us about access limits before ordering.
  • Orders lost due to an incorrect address entered at checkout cannot be refunded.
  • Questions: +1 (307) 317-7213 or hello@ecosolarkits.com, Mon-Sat 9:00 AM - 8:00 PM EST.

Read the full shipping policy

Return and refund policy

You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.

  • Damaged on arrival or wrong item: contact us within 24 hours of delivery (photos help) - we cover return shipping and issue a full refund or replacement.
  • Manufacturing defects: covered under the manufacturer's warranty - contact us for guidance.
  • Changed your mind: return shipping is the customer's responsibility and a 25% restocking fee may apply.
  • Cancelling before shipment: a 3% deduction covers platform fees.
  • Refunds are processed to the original payment method within approximately 10 days of the return being received and inspected.

To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy