With its upgraded LFP battery chemistry, the DELTA 2 Max Smart Extra Battery has a lifespan of 3000 complete cycles until it reduces to 80% capacity. You'll get pretty much 10 years of power, even if you use it every day. That's 6× longer than other power stations with a similar capacity and output.
Shipping Estimate
USA
- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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For Your Every Summer RSVP, with Code: SUMMER15
Description
EcoFlow Delta 2 Max Smart Extra BatteryExpandable capacity Increase the capacity of DELTA 2 Max with an extra 2048Wh. Triple the power 2 6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to gain a capacity of 6144Wh, ideal for home backup, RVing, outdoor adventures, and everyday use. Much more affordable, it costs up to 30% less than a power station of the same capacity. 10 Year Long lasting LFP Battery Durable, Safe, Lightweight
Expandable capacity
Increase the capacity of DELTA 2 Max with an extra 2048Wh.
Triple the power
2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to gain a capacity of 6144Wh, ideal for home backup, RVing, outdoor adventures, and everyday use. Much more affordable, it costs up to 30% less than a power station of the same capacity.
10-Year Long-lasting LFP Battery
Durable, Safe, Lightweight
Easy to use
There's no setup. Just plug it into your power station for more energy storage. Using the EcoFlow app, you can charge and monitor the DELTA 2 Max Smart Extra Battery with ease.
Stackable, space-saving design
Featuring an ergonomic, compact design, the DELTA 2 Max Smart Extra Batteries can be securely stacked on top of power stations and each other to save space and minimize clutter.
DELTA 2 Max Smart Extra Battery Specs
Capacity
2048Wh
Input Port
51.2V, 2000W Max
Output Port
51.2V, 3200W Max
Battery
LFP chemistry, 3000 cycles to >80% capacity
Dimension
464 × 235 × 283 mm (18 × 9 × 11 in)
Weight
19kg (42lbs)
What’s in the box
Extra Battery Cable User Manual Warranty Card
Compatible with
DELTA 2 / DELTA Max 2000/ DELTA 2 Max
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
4.8 ★★★★★
Based on 672 reviews
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Product Reviews
★★★★★ 5
Looks good
Color: Stainless Steel
Looks good on my counter. Holds everything I need.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
★★★★★ 5
Finally, a perfect large size! Exactly what I needed.
Color: Black
I am incredibly satisfied with the size of this holder! It’s rare to find an option this large on the market, and the extra space is exactly what I prefer. It holds everything perfectly and keeps my sink area so organized. If you prefer a larger size like I do, you won't be disappointed!
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Reviewed in the United States on May 21, 2026
★★★★★ 4
Over the sink holder
Color: Black
It fits good on the back of sink. I like it. Its very sturdy and it large
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 5
Perfect fit!
Color: Black, Color: Black
It is exactly what I needed. I love the expansion option and the toolbox that can be attached to the outside of the tray. I had a problem with the tray sliding after I adjusted to the size I wanted, but I secured everything in place with a few z-ties, and it works great. I also put anti-slip dots on the bottom, so it doesn't slide on the counter. I love it and I am very happy with my purchase!
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Perfect sink basket
Color: Black
Large holder fits many items fits on counter well
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Reviewed in the United States on May 16, 2026
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