Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh. Double the
capacity to meet your energy storage needs—ideal for home backup, RVing, outdoor
adventures, and everyday use.
Pay in installments of $199.88 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
EcoFlow DELTA 3 Smart Extra BatteryExpandable Capacity Increase the capacity of DELTA 3 Plus DELTA 3 with an extra 1024Wh. Double the capacity to meet your energy storage needsideal for home backup, RVing, outdoor adventures, and everyday use. Compact Design 1 3 smaller than the power station, but with the same power. It can also be securely stacked on top of the power station to save space and reduce clutter. 10 Year Lifespan with an LFP Battery The LFP battery chemistry enables 4000+
Expandable Capacity
Compact Design
1/3 smaller than the power station, but with the same power. It can also be securely
stacked on top of the power station to save space and reduce clutter.
10-Year Lifespan with an LFP Battery
The LFP battery chemistry enables 4000+ complete cycles until it reaches 80%
capacity. That means about 10 years of daily use—6× longer than other power
stations with similar capacity and output.
Easy to Use
A plug-and-play system with no setup required. Simply connect it to your power
station for more energy storage. Use the EcoFlow app to monitor and control the
DELTA 3 Smart Extra Battery with ease.
Control From Anywhere
Get all the details—battery percentage, remaining recharge time, hours left, and
more—right on the built-in screen or from the EcoFlow app, wherever you are.
Convenient Recharging
Recharge the Extra Battery by connecting it to the power station's Extra Battery port.
Use AC outlets, portable solar panels, or the Smart Generator for versatile charging
options.
Specs
What’s in the box
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 8 reviews
Sort
Product Reviews
★★★★★ 5
Versatility simple top
Size: X-Large, Color: White
Comfortable and well made top. Simple but versatile dress it up or casual, this top is a basic much needed wardrobe addition.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2026
★★★★★ 5
Great looking Cotton tank
Size: Small, Color: White
Love this tshirt. Have worn but not washed yet. So will add when I know if it shrinks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
★★★★★ 1
I wouldn’t call it a ribbed shirt if it’s almost see through
Size: Medium, Color: Black
Cheap thin looking fabric returned it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 3
Runs large with gaping arm holes.
Size: Large, Color: White
This runs extra large and the arm holes are gaping. You can see your undergarments through the arm holes. I am hoping that the shirt shrinks in the wash.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
★★★★★ 5
It soft and fits perfectly
Size: Large, Color: Black
Good love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
recommand products
Cometic Toyota 1AR-FE - 2AR-FE .034in HP Cylinder Head Gasket - 90.5mm Bore
176.00
Cometic Jaguar AJ26/AJ26S/AJ27/AJ27S/AJ28/AJ33/AJ33S .040in MLS Cylinder Head Gasket-87mm Bore-LHS
127.00
Cometic GM LS2/LH6 Gen-4 Small Block V8 Throttle Body Gasket - 2005
12.00
Cometic Toyota 1GR-FE .020in Rubber Coated Stainless Intake Manifold Gasket Kit - With Single VVT-i
21.00
Cometic Cosworth BD Series - FVA/FVC Lotus Twin Cam .060in Fiber Oil Pan Rails Kit
18.00