FlexTower All-in-One Energy Storage System - ShopSolar.com
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FlexTower All-in-One Energy Storage System - ShopSolar.com

FlexTower All-in-One Energy Storage System

by Fortress Power
SKU FLEXTOWER
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FlexTower All-in-One Energy Storage System

The FlexTower is an all-in-one energy storage system. Built on the foundation of the DuraRack battery cabinet, the FlexTower combines the battery, charge controller, and inverter into a single unit with an LCD control panel, and remote monitoring capability. The FlexTower is easy to install and carries IP65/NEMA3R ratings for indoor or outdoor use.

All-in-One Solution

  • Inverter, charge controller, LCD Control Panel, Battery and remote monitoring app integrated in one unit
  • Supports Off-grid, Back-up, Zero Export, Time-of-Use, Demand Response, Peak Shaving, and Virtual Power Plant

Flexible & Easy Install

  • IP65 water and dust proof for indoor & outdoor installation. NEMA3R
  • AC or DC couple to existing or new PV arrays
  • Optional Rapid Shutdown Button Included
  • Side knockouts sized for solar, grid, and generator wiring

Highest Reliability for Maximal Protection

  • 8000+ cycle life with tier 1 Automotive Lithium Iron Phosphate (LFP) battery
  • Easily scaled to meet all large residential and commercial electricity needs

Whole Home Backup with 200A Grid Pass-through

  • 200A Pass-through eliminates backup panel requirement
  • Saves time on inverter wiring
  • Includes battery cables and combiner for additional savings

Highest Roundtrip Efficiency to Maximize Your Solar Investment

  • >98% Battery Efficiency
  • 5% CEC-Rated Inverter Efficiency
  • Compatible with Din-Rail Heaters to maximize lifecycles in cold climates

Specifications

  • Enclosure Material Carbon Steel
  • Enclosure Protection IP65 water and dust proven (outdoor)
  • Enclosure Color White
  • Dimensions [W x H x D] 29.29 x 41.34 x 18.03 in (744 x 1050 x 458 mm)
  • Enclosure Weight 59.6 kg / 153.2 lbs
  • Maximum Battery Units 4 eFlex 5.4
  • Storage Capacity Range 5.4kWh - 21.6 kWh per unit
  • Max. Storage Capacity 81 kWh (4 unites in parallel)
  • Knockout Size 1inch & 2 inch
  • Positive and Negative Battery Busbars 2 x 4 points; M8 (5/16) Terminal Rings
  • Positive and Negative Busbars to Inveter 2 points; m10 (3/8) Terminal Rings
  • Battery Cables 4 sets of
  • Terminal Torque 7.0 - 7.7 Nm (5.1 - 5.7 ft-lb)
  • Enclosure Warranty 3 Years
  • Certifications UL9540, UL9540A, UL1973, CEC, SGIP

Still Have Questions? Give us a call today 1-877-242-2792

The solar investment tax credit (ITC), commonly known as the solar tax credit, offers home and commercial property owners incentives to install solar and move to renewable energy.

The solar tax credit will allow you to claim 30% of the total cost of this solar system as a credit on your federal tax return. 

*To be eligible for the tax credit, you must own the system and install it at a residence or business that you own in the USA. You must also fill out Form 5695 (Residential) or Form 2468 (Commercial) 

Simplified Solar Solutions

Simplified Solar Solutions

Our carefully curated solar kits combine the best components to create an ideal solution for your individual power needs. So whether you need to get off the grid, to save on your electric bill, for emergency backup power, or to fuel your next adventure - we eliminate the need for a designer or custom solution, and pass those savings on to you without compromising on performance.

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

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We’re people just like you

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

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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Returns are free in the first 30 days with no restocking or processing fees, although the customer must pay for the return shipping costs. See our complete return policy on our Shipping, Deliver, and Returns page.

What’s covered by the Shop Solar Kits returns policy?

Our returns policy covers all purchases made through Shop Solar Kits. 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 Shop Solar Kits order?

All orders are processed within 72 hours and you can expect delivery within 5 to 10 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 the financing and payment options at Shop Solar Kits?

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, see our Financing page for more details

How does the Shop Solar Kits Lifetime Support work?

Our legendary lifetime customer support has helped make us the #1 solar kit 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.