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.
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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
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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
4.4 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Excellent
Color: White/grey-Type L
Perfect size for several devices. Minimal packing space . Worked great for 1 month in Italy. I’m throwing my old ones out.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Worked Well
Color: White/grey-Type L
No issues. Worked fine. It’s bulky so takes up more room in the suitcase
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Great for Italy!
Color: White/grey-Type L
We bought these for our trip to Italy. They kept all of our hair dryers and curlers from being overwhelmed. They were perfect for our trip.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Worked great in Italy!
Color: White/grey-Type L
Used them on our recent 7 day trip to Italy. Every hotel had the 3-prong outlet so these were perfect. Charged up all our phones, iPads, and used them to convert to 120V for other appliances. Highly recommend!
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Perfect travel device for travel in Italy!
Color: White/grey-Type L
We traveled all over Italy and these worked perfectly everywhere. All the ports were helpful and reduced the number of adapters we needed. We brought a 2-prong style as well, that had larger posts and was supposed to be equally universal but it was definitely not. I would definitely recommend this to anyone and recommend you skip the 2 prong style.
The only other consideration is that when you unplug a lamp or something else to use the plug then you may want an additional way to plug the lamp back in and the additional US outlets on the side won’t help, since the lamp will the the same European 3 prong plug. That would definitely be a bulky adapter, but might be worth having one in the group.
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Reviewed in the United States on June 30, 2025
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