EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
    EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
General Overview

Upgrade your EcoFlow DELTA Pro Ultra X system with this plug-and-play Smart Extra Battery, adding an additional 6,144Wh of capacity instantly—no tools or setup required. Designed with EV-grade LFP cells, dual BMS, and 3-level safety architecture, this battery offers unmatched reliability, efficiency, and long-term performance.

Whether you’re preparing for extended outages or scaling your energy independence, the Smart Extra Battery is the ideal solution for off-grid power, emergency backup, or whole-home systems.

Key Features & Benefits:

  • Expandable 6,144Wh Capacity – Instantly increase your DELTA Pro Ultra X storage.

  • Plug-and-Play Design – No tools, wiring, or setup required.

  • EV-Grade LFP Battery Cells – Long lifespan, high efficiency, and thermal stability.

  • Smart Monitoring – View usage and control settings in real-time via the EcoFlow App.

  • Advanced Safety – Dual BMS + 3-level protection for peace of mind.

  • Extreme Weather Protection – Reliable performance in tough conditions.

  • Scalable System – Supports up to 30 additional batteries for up to 180kWh total capacity.

  • 5-Year Warranty – Backed by EcoFlow’s full coverage and support.

Perfect for powering your entire home, RV, cabin, or off-grid system when paired with the DELTA Pro Ultra X inverter hub.

User Manual / Documents:

General Overview

Upgrade your EcoFlow DELTA Pro Ultra X system with this plug-and-play Smart Extra Battery, adding an additional 6,144Wh of capacity instantly—no tools or setup required. Designed with EV-grade LFP cells, dual BMS, and 3-level safety architecture, this battery offers unmatched reliability, efficiency, and long-term performance.

Whether you’re preparing for extended outages or scaling your energy independence, the Smart Extra Battery is the ideal solution for off-grid power, emergency backup, or whole-home systems.

Key Features & Benefits:

  • Expandable 6,144Wh Capacity – Instantly increase your DELTA Pro Ultra X storage.

  • Plug-and-Play Design – No tools, wiring, or setup required.

  • EV-Grade LFP Battery Cells – Long lifespan, high efficiency, and thermal stability.

  • Smart Monitoring – View usage and control settings in real-time via the EcoFlow App.

  • Advanced Safety – Dual BMS + 3-level protection for peace of mind.

  • Extreme Weather Protection – Reliable performance in tough conditions.

  • Scalable System – Supports up to 30 additional batteries for up to 180kWh total capacity.

  • 5-Year Warranty – Backed by EcoFlow’s full coverage and support.

Perfect for powering your entire home, RV, cabin, or off-grid system when paired with the DELTA Pro Ultra X inverter hub.

User Manual / Documents:

EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty

EcoFlow SKU: EFDELTAPROUXEB
Regular price
$2,199.00
Sale price
$2,199.00
Regular price
$3,299.00
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EcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer SupportEcoFlow DELTA PRO [ULTRA-X] Smart Extra Battery | 6,144Wh Expandable Capacity | Plug-and-Play | EV-Grade LFP Cells | Dual BMS | 5-Year Warranty
$2,199.00

Testimonials

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"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."

J
John D.
Texas, USA
Verified Buyer

"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"

S
Sarah M.
California, USA
Verified Buyer

"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."

M
Mike R.
Florida, USA
Verified Buyer

"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."

E
Emily T.
Arizona, USA
Verified Buyer

"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."

D
David L.
Colorado, USA
Verified Buyer

"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"

L
Lisa K.
Nevada, USA
Verified Buyer

"Amazing experience from start to finish. The team was incredibly helpful and the system is performing beyond expectations. Couldn't be happier with our decision."

J
John D.
Texas, USA
Verified Buyer

"The whole process was seamless. From ordering to installation, everything was straightforward. Our electricity bill has dropped significantly!"

S
Sarah M.
California, USA
Verified Buyer

"Best investment we've made for our home. The customer support is outstanding — they walked us through every step of the setup process."

M
Mike R.
Florida, USA
Verified Buyer

"We compared prices everywhere and this was by far the best deal. The quality of the panels is top-notch and installation guidance was superb."

E
Emily T.
Arizona, USA
Verified Buyer

"Great product and even better customer service. They helped us design the perfect system for our needs. Highly recommend to anyone considering solar."

D
David L.
Colorado, USA
Verified Buyer

"From the free proposal to the final install, everything exceeded our expectations. We're producing more energy than we consume most months!"

L
Lisa K.
Nevada, USA
Verified Buyer

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Frequently Asked Questions

Find the answers to some of the most common questions customers have before placing their order.

Yes. Our team can help you choose the right solar kit based on your goals, power needs, and location. We provide personalized guidance before and after your purchase at no additional cost.

Many of our customers complete the majority of installation themselves using our diagrams and support resources. For final electrical connections, a licensed electrician may be required depending on local codes.

While we do not directly install systems, we can help connect you with qualified local professionals and provide technical documentation to support your installer.

We stand behind our products. If you have specific questions about returns, eligibility, or specific product conditions, you can learn more in our help center linked below.

All components are backed by manufacturer warranties. In addition, our team provides free lifetime technical support to assist you throughout the life of your system.

Yes! We offer a variety of flexible payment plans to fit any budget. Options include monthly financing with competitive interest rates, and some plans require no money down. Apply during checkout and get approved in minutes.

If you're ready to place your order, you can go ahead and checkout online right now. If you have questions, our friendly team of solar experts are happy to assist and can take your order over the phone. If you're interested in financing, you will find the application at checkout online. So whatever is best for you, we are happy to accommodate.

Our team works hard to process all orders within 24-48 hours. Most products ship directly to your door using the quickest, most cost effective ground shipping services depending on size. You’ll receive tracking details and delivery coordination as soon as your order ships. Our average shipping times are anywhere from 3-7 days.

You’ll have direct access to our support team via phone, email, and chat. Whether it’s setup guidance or troubleshooting years down the road, we’re here to help.

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