Skip to content
by EcoFlow

EcoFlow DELTA Pro 3 4096Wh Smart Extra Battery

SKU: EFDELTAPRO3EB
Save $299.99 Save $299.99
Original price $2,298.99
Original price $2,298.99 - Original price $2,298.99
Original price $2,298.99
Current price $1,999.00
$1,999.00 - $1,999.00
Current price $1,999.00
Availability:
in stock, ready to be shipped

Free Shipping

Every Off Grid Stores Product Ships For Free

Limited Sales Tax Collection

In compliance with state regulations, we must charge sales tax in: AZ, CA, CO, FL, GA, IL, MI, NC, NV, OH, PA, TN, TX, VA, WA, and WI.

If your state isn’t listed — no tax!

Authorized Dealer

We are authorized dealers of every brand on our website

Found a lower price?

Let us know and we’ll do our best to beat it. We work hard to offer you the best value online.

5-Year Warranty

Off Grid Stores is an authorized retailer of EcoFlow products. Because of this, we pass on EcoFlow's manufacturer warranty to you.

Product Highlights

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

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

Best Price Guarantee

We work hard to offer fair, competitive prices on everything we sell.

If you find the same item listed for less on a competitor’s site, let us know — and we’ll do our best to match it.

Just reach out to our customer service team before purchasing to see what we can do.

You can learn more by visiting our Best Price Request page here.

Shipping & Handling

We provide Free Shipping to the continental 48 United States only.

International shipping, as well as shipping to Alaska, Hawaii, US Protectorates, P.O. Boxes, APO, FPO, or DPO addresses, is NOT available.

Orders are typically processed and shipped from our warehouse within 1-3 Business Days (excluding weekends and holidays).

After leaving our warehouse, the expected delivery time is 3-4 Business Days, resulting in an average total shipping and handling time of 4-7 Business Days.

Learn more about our Shipping & Handling Policy here.

Returns & Refunds

While shopping at Off Grid Stores know that returns are a breeze! If you are not completely satisfied with your purchase, for any reason, you may return it to us within 30 Days of delivery for a refund.

If you would like to open up a return you can send us an email to support@offgridstores.com with your name, order number, and reason for return.

To learn more about our Returns & Refunds Policy you can do so here.

Why Choose Off Grid Stores?
  • Trusted by Thousands: We’ve served over 15,000 customers and counting — your satisfaction is our priority.
  • Real Expertise: Our team has hands-on experience with the products we sell — we actually use them ourselves.
  • U.S.-Based Support: When you reach out, you’ll talk to a real person here in the USA, not someone overseas.
  • Fast, Reliable Shipping: All products ship from U.S. warehouses for quicker, hassle-free delivery.
  • Authorized Dealer: We're official partners with every brand we carry, so your purchase is backed by full manufacturer warranty and support.

EcoFlow DELTA Pro 3 4096Wh Smart Extra Battery

EcoFlow DELTA Pro 3 4096Wh Smart Extra Battery

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.

Off-grid

RV

Jobsite

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.

 

Specifications:

EcoFlow DELTA Pro 3 Smart Extra Battery
SKU EFDELTAPRO3EB
Capacity 4096Wh
Input Port 40V-58.4V=80A Max
Output Port 40V-58.4V=100A Max
Dimension 27.3 in x 11.6 in x 8.5
Weight 73 lbs
Compatible with EcoFlow DELTA Pro 3
Discharge Temperature 14°F~113°F
Display LED Array
Discharge Temperature 14°F~113°F
Charge Temperature 32°F~113°F
Storage Temperature 14°F~113°F

PACKAGE INCLUDES

EcoFlow DELTA Pro 3 Smart Extra Battery

EcoFlow DELTA Pro 3 Smart Extra Battery

x 1

EcoFlow Extra Battery Cable

x 1

Safety Guide

x 1

Quick Start Guide

x 1

EcoFlow Warranty Card

x 1

Product Documents:

EcoFlow DELTA Pro 3 Smart Extra Battery User Manual

download
Download Now >

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
c
clive huggins (Brooklyn, US)

i receive it very quick like they told me the price i paid for was better than all of the other store

J
John George (San Antonio, US)
EcoFlow DELTA Pro 3 Extra Battery

The unit is working as expected. The EcoFlow app automatically recognized the additional capacity. I have fully charged the extra battery and will now test by discharging through a couple of circuits.

A small bother: The EcoFlow documentation is scanty at best. You will have to go their site for full info. My intended use for the system is emergency backup so I want printed information available. (In an outage I am as likely to lose internet as power.) I'll just have to troll through the support pages and print off necessary info.

Delivery was flawless. I had to be home to accept the box; the driver arrived within the assigned time window.

Thank you for the excellent service.