Skip to content
by EcoFlow
EcoFlow DELTA 2 Max Smart Extra Battery
Save $164.99 Save $164.99
Original price $1,263.99
Original price $1,263.99 - Original price $1,263.99
Original price $1,263.99
Current price $1,099.00
$1,099.00 - $1,099.00
Current price $1,099.00
in stock, ready to be shipped

Free shipping with delivery betweenandOrder within


Save An Extra


% Today!

Use Code


at Checkout

Free Shipping

Every Off Grid Stores Product Ships For Free

No Sales Tax

We Only Charge Sales Tax In Nevada

Authorized Dealer

We are authorized dealers of every brand on our website

5-Year Warranty

Off Grid Stores is an authorized retailer of all brands on our website. Because of this we pass on the manufacturer's warranty to you.

Why Buy From Us?

- Help Support Small Family Owned Business

- Our Team Has Actual Knowledge Of Our Products

- You Will Talk To A Real Person In The USA When You Call

- We Guarantee To Match The Lowest Prices On The Internet

- Our Items Are Located In The USA

- We Actually Live Off-Grid Unlike Some Of Our Competitors

Best Price Guarantee

Shop with confidence, as we guarantee the best prices available.

If you come across an item at a lower price on a competitor's website, we'll gladly match it.

Simply contact our customer service chat before purchasing to redeem this exclusive offer.

Learn more by visiting our Best Price Guarantee page here.

Shipping & Handling Policy

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 with your name, order number, and reason for return.

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

EcoFlow DELTA 2 Max Smart Extra Battery

• Expandable capacity - Increase the capacity of DELTA 2 Max with an extra 2046Wh.

• Triple the power - 2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144Wh. Ideal for home backup, RVing, outdoors or even everyday use.

• Built to last 6× longer - Get 10 years of daily use until hitting 80% of its original capacity. That’s down to its LFP battery chemistry giving you 3000+ cycles.

• 5-Year Warranty

Expandable capacity

Increase the capacity of DELTA 2 Max with an extra 2046Wh.

Triple the power

2-6kWh expandable capacity to fit your energy storage needs.

Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144wh. Ideal for home backup, caravanning, outdoors or even everyday use.

120V Home Backup: Power through outages

Power your essential appliances with a hefty 2400W AC output by connecting DELTA 2 Max (2kWh)

and up to two Smart Extra Batteries (6kWh) with your home's transfer switch for partial home backup. With a plug-and-play design, i

t's easier than ever to prepare for blackouts.

Power for the entire family

2048Wh Capacity

A generous 2048Wh capacity makes DELTA 2 Max ideal for home backup, running your essentials for hours.

Using your transfer switch, or plugged in directly, keep your fridge on and stop food from spoiling for up to 14 hours. With its lightweight design,

DELTA 2 Max is portable enough to grab and go on the next camping trip.

Home Backup

RVing & Outdoors

DIY Projects

Filmmaking & Photography

Customized In-App Energy Management

Take control of your power

Save more on electricity billsCustomize the working time of DELTA 2 Max to avoid peak rates.

DELTA 2 Max Smart Extra Battery Specs:

Capacity 2048Wh
Output Port 51.2V, 3200W Max
Dimension 18 in x 9 in x 11 in
What’s in the box Extra Battery Cable User Manual Warranty Card
Input Port 51.2V, 2000W Max
Battery LFP chemistry, 3000 cycles to >80% capacity
Weight 19kg (42lbs)
Compatible with DELTA 2 / DELTA Max 2000/ DELTA 2 Max

User Manuals:

EcoFlow DELTA 2 Max Smart Extra Battery User Manual

Download Now >

Customer Reviews

Based on 1 review
Glenn Cross
Quality Stuff!!

Shipped out ahead of projected date. Works with their other equipment just as described.