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SKU FEV-MAX-18.5

Fortress Power eVault [MAX] 18.5kWh Lithium Ferro Phosphate Battery | 10-Year Warranty

Current price $9,315.00
Original price $14,999.00
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Fortress Power eVault [MAX] 18.5kWh Lithium Ferro Phosphate Battery | 10-Year Warranty
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Fortress Power eVault [MAX] 18.5 Kilowatt-hour Lithium Battery Storage

The newest innovative Lithium Iron Phosphate battery from Fortress Power is the eVault Max 18.5 kWh. An all-in-one solution for your residential and commercial needs. Scalable up to 370kWh with serviceable top cover access to make installation of this battery simple and worry-free. The eVault Max is AC/DC coupled to solar arrays and works for many applications that require solar storage, including Off-Grid, Back-Up power, self-supply, and Peak Charge Reduction just to name a few.

Not only is the new fortress eVault Max 18.5 kWh battery safe, long-lasting and affordable, but is also equipped with a brand new LCD screen that displays voltage, current, state of charge, and power output and operating status. The built-in smart battery management system integrates multilevel safety concepts for excellent performance.

Latest Technology: We use the safest, environmentally friendly prismatic Lithium Iron Phosphate cells.

Lowest Cost per cycle: Competitively priced and easy to install with >98% round-trip efficiency.

Flexible and Scalable: Expandable from 18.5 kWh to 370 kWh for both residential and commercial buildings

Long-Lasting: 10-year warranty; up to 6,000+ cycles

Smart and Advanced: The smart relay-based Battery Management System, supports closed-loop communication with various hybrid inverters for best performance - scalable up to 20 units

Fortress Power eVault MAX 18.5 Specifications:

  • Total Energy: 18.5 kWh
  • Nominal Voltage: 51.2(48)V
  • Voltage Range: 45-58.4 V
  • Recommended Charge Current: 150 Amp
  • Max. Charge Current(Continuous): 180 Amp
  • Max. Discharge Current(Continuous): 180 Amp
  • Recommend Storage temperature: 50 to 95 F
  • Charge temperature: 32 to 113 F
  • Capacity: 370 Amp-hour
  • UL 9540 Listed
  • Dimension(H x W x D): 42.2" x 20.3" x 20.3"
  • Weight: 520 lbs

Fortress Power eVault MAX 18.5 Benefits:

    • Safe Lithium Iron Phosphate Technology (LiFeP04)
    • High durability and long-lasting
    • Closed loop communication with inverters
    • Scalable from 18.5kWh-370kWh
    • Intelligent digital processor based BMS
    • Advanced cell level monitoring and balancing

    Technical Features:

    • Large touch screen LED display
    • Sleek IP55 industrial-grade aluminum
    • Front-serviceable cover
    • Transportable on wheels

    Downloads And Specs:

    What is your return policy?

    Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

    What’s covered by your return policy?

    Our returns policy covers all purchases made through Shop Solar. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

    How long will it take to receive my order?

    All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

    What are your financing and payment options?

    We offer several ways to pay to make getting your solar kit simple:

    • Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer
    • You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

    How does your Lifetime Customer Support work?

    Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Shop Solar Kits equipment, we’ve got you covered: we’re always only a phone call or email away.

    Top Solar Company in the USA

    Top Solar Company in the USA

    The prestigious ranking by Consumer Affairs is based on comprehensive evaluations, including ratings and reviews, equipment options, support services, pricing transparency, warranties, and various other factors. Among the top 6 nominated companies, Shop Solar stands out with the highest review rating, reaffirming its dedication to customer satisfaction and product quality.

    Best Components, Lowest Prices

    Best Components, Lowest Prices

    We cut out the bloat of traditional solar companies and pass those savings off to you. Plus, we provide free shipping on all solar kits and lifetime customer service on everything we sell.

    Expert Guidance

    Expert Guidance

    Our team of solar professionals is here to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.

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    We’re people just like you

    We’re not corporate and neither are our customers. We’re just a group of 50+ solar enthusiasts who are passionate about providing an honest, no-BS way for anyone, anywhere to improve their lives and the world around them with solar power.

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    Trusted Solar Authority

    With over 40,000+ happy customers, 2,500+ positive reviews, and decades of experience in the industry, we’re proud to say we’re America’s #1 solar power solutions provider. You can trust us to provide you with top-notch products and legendary customer service at every step of the way.

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    From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.

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    Solar Power Made Easy

    Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.

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    Secure Your Independence

    Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.

    Solar That Makes Sense - DIY+

    Why pay more when you can go solar your way? With our DIY+ model, you become the master of your own solar project - we call it being your own general contractor, using our seasoned technicians to help guide you at every turn. So you can skip the high-commission salespeople and source your own top-tier equipment from us, and if you need a professional installer, we can help with that too. It’s solar, but smarter and more rewarding—because who said going green couldn’t also save you some green?

    Solar Power, Your Way - Expert Guidance Included

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    Go Green and Save Green with Our Do-It-Yourself Solar Solution

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    Solar Power, Your Way - Expert Guidance Included

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    Become Your Own Solar Contractor with Our DIY+ Program

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    Save Thousands with Our DIY Solar Kits and Support

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    Go Green and Save Green with Our Do-It-Yourself Solar Solution

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    Why Choose Shop Solar

    What To Expect - Complete Kits

    We've been providing America and Canada with complete solar kits since 2018. Our mission is to make solar simple, which is why our complete packages contain every part and piece that you'd ever need. Designed by our expert solar and electrical engineers, we can have the entire kit shipped to your door. All of our kits come with diagrams and videos along with a lifetime of customer support.

    Top Solar Company in the USA

    The prestigious ranking by Consumer Affairs is based on comprehensive evaluations, including ratings and reviews, equipment options, support services, pricing transparency, warranties, and various other factors. Among the top 6 nominated companies, Shop Solar stands out with the highest review rating, reaffirming its dedication to customer satisfaction and product quality.

    Best Components, Lowest Prices

    We cut out the bloat of traditional solar companies and pass those savings off to you. Plus, lifetime customer service on everything we sell.

    Expert Guidance

    Our team of solar professionals is here to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.

    We’re people just like you

    We’re not corporate and neither are our customers. We’re just a group of 50+ solar enthusiasts who are passionate about providing an honest, no-BS way for anyone, anywhere to improve their lives and the world around them with solar power.

    Trusted Solar Authority

    With over 40,000+ happy customers, 2,500+ positive reviews, and decades of experience in the industry, we’re proud to say we’re America’s #1 solar power solutions provider. You can trust us to provide you with top-notch products and legendary customer service at every step of the way.

    What to Expect - Solar Panels

    Get to know the top-tier solar panels included in your kit. These panels are designed to deliver consistent & reliable performance, ensuring your system powers your needs with ease.

    What to Expect - Batteries

    Learn about the high-quality batteries included in every solar kit, designed to provide reliable energy storage for all your needs. These batteries ensure your system delivers consistent power when you need it most.

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    Go Solar Now, Pay Later

    At ShopSolar you, we offer a wide variety of payment plan options to meet each customer's needs.

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    Quick and Easy Application

    Fill out a short application and we will match you with multiple payment plan options instantly - Survey at checkout!

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    Poor Credit or No Credit?

    Don’t sweat it. We welcome all credit scores and having a credit score is not required for approval.

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    No Money Down Today

    Some payment plans offer as little as no money down, if you qualify.*` - Survey at checkout!

    How we compare to the others!

    Tired of the costly and complicated traditional solar sales model? At ShopSolar.com, we streamline the process with our digital-first platform, offering one-click complete solar power solutions that save you up to 50%, often including batteries, for true energy independence. Join over 45,000 satisfied customers enjoying affordable solar energy. Start your journey towards saving thousands at ShopSolar.com today!

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    Customer Success Stories

    TP

    Troy P

    star star star star star

    EG4 off-grid base kit, Happy with my purchase.

    This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

    JB

    Jacob B

    star star star star star

    Easy Process, Genuine Support

    Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Shop Solar team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Shop Solar.

    PB

    Patrick B

    star star star star star

    Off Grid Solar Purchase

    I wanted to get an offgrid solar system for years but didn’t know where to start. I found Shop Solar on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

    JM

    James Martin

    star star star star star

    Highly Recommend

    I would like to take the time to express the outstanding service that I was provided with by Shop Solar. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Shop Solar Kits.

    BH

    Brian H

    star star star star star

    Solar Kit for Mobile Work Van

    As a professional videographer, I needed reliable power on the go. ShopSolar's Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

    KS

    Keith S

    star star star star star

    Best Tech Support

    You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

    CA

    Coll A

    star star star star star

    Great Experience

    My experience with Shop Solar has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

    TP

    Troy P

    star star star star star

    EG4 off-grid base kit, Happy with my purchase.

    This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

    JB

    Jacob B

    star star star star star

    Easy Process, Genuine Support

    Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Shop Solar team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Shop Solar.

    PB

    Patrick B

    star star star star star

    Off Grid Solar Purchase

    I wanted to get an offgrid solar system for years but didn’t know where to start. I found Shop Solar on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

    JM

    James Martin

    star star star star star

    Highly Recommend

    I would like to take the time to express the outstanding service that I was provided with by Shop Solar. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Shop Solar Kits.

    BH

    Brian H

    star star star star star

    Solar Kit for Mobile Work Van

    As a professional videographer, I needed reliable power on the go. ShopSolar's Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

    KS

    Keith S

    star star star star star

    Best Tech Support

    You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

    CA

    Coll A

    star star star star star

    Great Experience

    My experience with Shop Solar has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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    Shop Securely, Trusted Supplier, 100% Satisfaction

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    Trusted Company, Real Products, Lifetime Support

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    Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

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    Manufacturer Warranty, Exceptional Service

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