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.
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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
4.6 ★★★★★
Based on 1544 reviews
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Product Reviews
★★★★★ 5
Good
What can I say? It's eufy part lol. Works really good as expected. I would buy again.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
perfect fit
fit perfectly. i love this robot!
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Perfect fit
Fit, works for my robot
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Reviewed in the United States on December 10, 2025
★★★★★ 5
Great refill for great product!
The Eufy Official Accessories, 6-Pack Large Capacity Dust Bags Compatible with C20 Omni Robot Vacuum provided a perfect fit, and we couldn't be happier with the quality and performance t. The fit was perfect, and the bags were easy to install. Just pop them in and go!
Each bag holds an an amazing amount of debris, and I've noticed much less dust escaping. If you are looking for a reliable replacement that works just like the original, these are a great buy. Highly recommend!
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Reviewed in the United States on May 26, 2025
★★★★★ 5
Efficient & nice
Works great~ and helpful
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Reviewed in the United States on October 9, 2025