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EcoFlow DELTA Pro 3 Smart Extra Battery

by EcoFlow

40,000+ Happy Customers!

We Beat All Competitors Prices.

Includes Lifetime Customer Support!

Fast & Reliable Shipping - While Supplies Last.

Current price $3,399.00
Original price $4,249.00
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Original price $4,249.00
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Current price $3,399.00
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Support Agent

Have a question? We're here to help.

Friendly Phone Support:  877-242-2792

Mon-Fri 10am-6pm EST

Smart Extra Battery Compatibility - Works seamlessly with EcoFlow DELTA Pro 3 (also compatible with EcoFlow DELTA Pro).

Scalable Power - Expandable up to 12kWh for increased capacity.

Long-Lasting Battery - LFP battery with 4000 life cycles to 80% capacity.

Easy to Use - Plug-and-play design for straightforward operation.

Stackable Design - Perfect for home or indoor power backup applications

An Intelligent Subpanel For Outage Protection And Savings In One

The EcoFlow Smart Home Panel 2 is the center of your whole-home backup solution, working alongside EcoFlow DELTA Pro 3, generators, and solar panels to protect your thome. With a fast, automatic switchover, you'll have reliablebackup whenever needed. It allows you to customize your energy usage based on time-off-use rates and your home's solar energy production.

Plug and Play

The smart extra batteries are easy to connect with the main unit of EcoFlow DELTA Pro 3. Enjoy a seamless, plug-and-play setup. The compact and portable design adds convenience to your power management.

Explore the Secure Feeling EcoFlow Brings to You

Built with state-of-the-art automotive-grade LFP cells for safe and reliable service. Our strong 5-year warranty ensures peace of mind.

Energize Every Moment That Needs Electricity

Power almost all your essential home appliances with the robust 4000W and dual 120V/240V capabilities of a single unit. Add extra batteries to extend the convenience even further.

Cutting-Edge Design, Sleek and Striking

Boosts portability with wider wheels, ergonomic handle, and a compact design. Perfect for dynamic lifestyles and maximizing family space.

Effortless All-in-One Command With the EcoFlow App

Control and monitor your home's power remotely with ease using the EcoFlow app. Track every watt and customize your power usage for optimal efficiency.

What's Included With Your Order?

  • Ecoflow Delta Pro 3 Smart Extra Battery
  • Ecoflow Extra Battery Cable
  • Safety Guide
  • Quick Start Guide
  • Warranty Card


  • Capacity 4096Wh
  • Input Port 40V-58.4V=80A Max
  • Output Port 40V-58.4V=100A Max
  • Dimension 694mm*295mm*215mm
  • Weight 33kg
  • Compatible with EcoFlow DELTA Pro 3
  • Dispaly LED Array
  • Discharge Temperature 14°F~113°F 
  • Charge Temperature 32°F~113°F
  • Storage Temperature 14°F~113°F

Still have questions? Give us a call at 877-242-2792

What is the Shop Solar Kits returns policy?

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.

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.

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

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 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 30,000 solar kits sold, 2,500+ positive reviews, and years of experience in the industry, we’re proud to say we’re America’s #1 solar kit retailer. So you can trust us to provide you with top-notch products and legendary customer service at every step of the way.