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EF ECOFLOW DELTA 2 Smart Extra Battery, 1024Wh LiFePO4 Expansion Battery for Power Station DELTA2

$799.00
Get $10 off instantly: Pay $789.00 $799.00 upon approval for the Amazon Store Card. No annual fee.
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Purchase options and add-ons

Brand EF ECOFLOW
Wattage 1024 watts
Fuel Type Electric
Power Source Solar Powered
Recommended Uses For Product Residential, Camping
Item Weight 24.7 Pounds
Voltage 110 Volts
Output Wattage 1800 Watts
Special Feature Fast charging
Included Components LFP Battery(LiFePO4)

About this item

  • Extra Battery Capacity. Add on to your DELTA 2 to expand capacity to 2048Wh. Easy setup to meet a wide range of needs from home backup power to outdoor use.
  • Lasts Years on End. As a portable battery with an LFP battery chemistry, it lasts years on end with regular use. 3000+ cycles to be precise.
  • Charge Your Way. The DELTA 2 Extra Battery allows you to charge fast with multiple methods. Choose AC outlets, car outlets, solar panels or even our Smart Generator. With that, you can go for 0-80% in 80 mins.
  • Power Pretty Much Anything. With a 1800W output & 15 outlets when paired with DELTA 2, you can power 90% of home appliances.
  • Control and Monitor. With an onboard LCD screen and an EcoFlow app you can check all your essentials. Remaining charge, hours remaining at current output, and a whole lot more.

Customer ratings by feature

Noise level
4.4 4.4
Charging power
4.3 4.3
Portability
4.2 4.2
Battery life
4.0 4.0
See all reviews

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EF ECOFLOW DELTA 2 Smart Extra Battery, 1024Wh LiFePO4 Expansion Battery for Power Station DELTA2
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Ships from and sold by EF ECOFLOW-US.
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EF ECOFLOW Portable Power Station DELTA 2, 1024Wh LiFePO4 (LFP) Battery, Fast Charging, Solar Generator(Solar Panel Optional)
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From the brand

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  2. ecoflow logo

    EcoFlow's DELTA Series is recognized by some of the most prestigious international awards. The flagship product of the Series - DELTA Pro, was named in TIME's list of 100 Best Inventions of 2021. It also won the 2022 Red Dot Design Award along with its ecosystem accessories. The 2022 iF DESIGN AWARD named the DELTA Pro, DELTA Max, 400W Solar Panel, and Smart Generator the winners in the product discipline.

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    Fresh Arrivals: DELTA Pro 3

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  9. EF ECOFLOW Portable Power Station RIVER 2, 256Wh LiFePO4 Battery/ 1 Hour Fast Charging, 2 Up to 6...
    EF ECOFLOW Portable Power Station RIVER 2 Max, 512Wh LiFePO4 Battery/ 1 Hour Fast Charging, Up To...
    EF ECOFLOW Portable Power Station RIVER 2 Pro, 768Wh LiFePO4 Battery, 70 Min Fast Charging, 4X800...
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Product Description

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Product Warranty: For warranty information about this product, please click here

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EF ECOFLOW DELTA 2 Smart Extra Battery, 1024Wh LiFePO4 Expansion Battery for Power Station DELTA2

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EF ECOFLOW 1800W Dual Fuel Smart Generator with Both LPG and Gas Powered Support, Smart Control, for Home Battery Backup, Emergency, Applicable for DELTA Pro/DELTA Max/DELTA 2/DELTA 2 Max
EF ECOFLOW 1800W Dual Fuel Smart Generator with Both LPG and Gas Powered Support, Smart Control, for Home Battery Backup, Emergency, Applicable for DELTA Pro/DELTA Max/DELTA 2/DELTA 2 Max
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Price$799.00-45% $549.00
List: $999.00		-36% $899.00
List: $1,399.00		$999.00-17% $239.00
List: $289.00		$1,599.00
Delivery
Get it Aug 27 - 28
Get it Aug 27 - 28
Get it Sep 3 - 4
Get it Aug 27 - 28
—
Get it Aug 5 - 6
Customer Ratings
4.44.4 out of 5 stars126
4.64.6 out of 5 stars1,087
4.94.9 out of 5 stars17
4.34.3 out of 5 stars4
4.34.3 out of 5 stars2,586
4.44.4 out of 5 stars191
Noise level
4.4
4.2
5.0
—
4.0
4.1
Charging power
4.3
4.6
5.0
—
4.1
3.8
Portability
4.2
4.7
5.0
—
4.6
3.8
Battery life
4.0
4.6
—
—
3.8
—
Value for money
3.8
4.7
—
—
—
3.5
Sold By
EF ECOFLOW-US
EF ECOFLOW-US
EF ECOFLOW-US
EF ECOFLOW-US
ECOFLOW Direct
EF ECOFLOW-US
fuel type
Electric
—
Electric
—
electric
Electric
power source
Solar Powered
Solar Powered
Solar Powered
Battery Powered, Solar Powered
Solar Powered
Battery Powered
engine type
4 Stroke
—
4 Stroke
4 Stroke
4 Stroke
4 Stroke
output wattage
1800 watts
1800 watts
—
1800 watts
—
—
runtime
80 minutes
—
—
80 minutes
3 hours
3.5 hours
wattage
1024 watts
1024 watt hours
2048 watt hours
1024 kilowatt hours
600 watts
1800 watts

Customer reviews

4.4 out of 5 stars
126 global ratings

Customers say

Customers like the ease of use, quality and value of the electricity generator. For example, they mention it's simple to use, well made and has an excellent warranty. That said, they're happy with performance and the app provides a lot of info. That being said, opinions are mixed on battery life.

AI-generated from the text of customer reviews

Select to learn more
QualityEase of usePerformanceAppValueCapacityBattery life
15 customers mention "Quality"15 positive0 negative

Customers are satisfied with the quality of the electricity generator. They mention that it looks well made, is well-built, and has an excellent warranty. The packaging is incredibly durable and the product charges right up.

"It charged right up and seems to be working great, though how do you know until the power goes out? It has a great app that is also user-friendly...." Read more

"...Thank you Ecoflow for making such a great product and an excellent warranty." Read more

"...Works great. Charges up with the wall outlet too not just solar. App provides many settings to choose whats best for you...." Read more

"...We are pleased with the product quality and design. But above all, the customer service is excellent. Thank you for caring about your customers...." Read more

10 customers mention "Ease of use"10 positive0 negative

Customers find the use of the electricity generator simple, plug-and-play, and manageable. They also say the weight is heavy but manageable, and the set up is easy.

"...It has a great app that is also user-friendly...." Read more

"...that is not technically inclined that the set up and use of the Ecoflow was very easy and I am happy with the expandability of the product ...." Read more

"Love itQuality product. ECO app is great accommodating. Ease of use is simple...." Read more

"...familiar enough to give any particulars other than it being rather simplistic to use, and I am impressed at how well it is made...." Read more

9 customers mention "Performance"7 positive2 negative

Customers are happy with the quality and performance of the generator. They say it seems to be working well, has the best value, and is easy to use.

"It charged right up and seems to be working great, though how do you know until the power goes out? It has a great app that is also user-friendly...." Read more

"...I bought mine with an extra battery and a solar panel. Works great. Charges up with the wall outlet too not just solar...." Read more

"...Plugs right in, works great, and nestles neatly on top or beside the main unit...." Read more

"...their products over the past 2 months, and I was unable to reproduce the advertised performance of their batteries, generators, or panels...." Read more

5 customers mention "App"5 positive0 negative

Customers like the app. They say it has good features, is user-friendly, and provides many settings to choose what's best for them. They also say it provides a lot of info and is a nice addition.

"...It has a great app that is also user-friendly...." Read more

"...Charges up with the wall outlet too not just solar. App provides many settings to choose whats best for you. I charged over night with wall outlet...." Read more

"...It easy to use, provides a lot of info, and Ecoflow was quick to respond by sending out a new cable I never received for the extra betters pack...." Read more

"I want to like these. They have good features. However I had several issues and this is my third one in a few months...." Read more

4 customers mention "Value"4 positive0 negative

Customers appreciate the value of the electricity generator. They say it's the best value in solar and easy to use.

"...of small stations, I thought I would give this a whirl, at a nice sale price. I tested it and got almost 48 hours running a small fridge...." Read more

"Right price and great quality" Read more

"...Also fast shipping quality product at a fair price." Read more

"Best value and performance in solar and easy to use..." Read more

3 customers mention "Capacity"3 positive0 negative

Customers are satisfied with the capacity of the electricity generator. They mention that it improves capacity and is happy with the expandability.

"...the set up and use of the Ecoflow was very easy and I am happy with the expandability of the product ...." Read more

"Totally plug and play, and doubles your capacity...." Read more

"Improves capacity..." Read more

9 customers mention "Battery life"6 positive3 negative

Customers are mixed about the battery life of the electricity generator. Some mention that it doubles the lasting power, provides extra run time, and powers the electrical needs of their RV. However, others say that there are zero outlets on this battery, it's super thick and stiff, and must be plugged into the side of the battery.

"The Ecoflow extra battery gives you extra power, when you need it. Especially during a power outage." Read more

"...3. Powers the electrical needs of my RV including the compressor Air Conditioner that surges at about 800 watts with about 300 watt high setting. 4...." Read more

"...The cord is super thick and stiff and must be plugged into the side of the battery and the side of the main unit...." Read more

"The battery gives you extra run time..." Read more

Quick charge love it still experimenting solar panels next
5 out of 5 stars
Quick charge love it still experimenting solar panels next
In case of emergency deep freezer must be cold
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Top reviews from the United States

Rain Dawn Wolf
5.0 out of 5 stars Easy to use
Reviewed in the United States on July 11, 2024
Verified Purchase
It charged right up and seems to be working great, though how do you know until the power goes out? It has a great app that is also user-friendly. I did test it running my chest freezer all night while I slept, and in the morning it was only down to 80%, though freezers turn on and off. I got this extra battery to add to the Delta 2 bcuz I'll want to watch tv at night if the power is out, movies at least. I'm ordering another extra battery for the power tower trio on my Delta 2 and my Delta 2 Max.
6 people found this helpful
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Elaine S.
5.0 out of 5 stars Best value and performance in solar and easy to use
Reviewed in the United States on January 20, 2024
Verified Purchase
Well I am not going to try to write a technical review, I will leave that to people who know more than I do. But after reading those technical reviews and studying other solar products, it was a no brainer to pick Ecoflow.
I wanted a very portable system that had a long life span and high efficiency rating. The Delta 2 was perfect for my needs.
I can also say that for someone that is not technically inclined that the set up and use of the Ecoflow was very easy and I am happy with the expandability of the product .
Also, I was surprised that even on a cloudy day the Ecoflow was generating power.
Now I am tempted to go with a whole house system from Ecoflow.
18 people found this helpful
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Byron R. Engler
5.0 out of 5 stars Ecoflow the best power station and extra batteries you can buy.
Reviewed in the United States on July 11, 2024
Verified Purchase
I have bought (3) Ecoflow Delta 2 Power Stations and (2) Extra Delta 2 batteries. Ecoflow says anything sold on Amazon does have their 5 year warranty. Ecoflow has the best warranty and products. They stand behind their word and are always there for their customers. Thank you Ecoflow for making such a great product and an excellent warranty.
4 people found this helpful
Helpful
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Jim
4.0 out of 5 stars The battery gives you extra run time
Reviewed in the United States on June 4, 2024
Verified Purchase
I purchased this because I'm getting older and sometimes when the power goes out you don't want to drag a big generator out just to run a few creature comfort items. The exact battery allows me an opportunity to get a few things working if the power is out for just an hour or so
9 people found this helpful
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M. Sproles
5.0 out of 5 stars Great customer service
Reviewed in the United States on July 9, 2024
Verified Purchase
We are very happy to have found EcoFlow. This company has responded quickly to our questions and/or concerns. We are pleased with the product quality and design. But above all, the customer service is excellent. Thank you for caring about your customers. This is a rarity today.
4 people found this helpful
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David Staats
1.0 out of 5 stars It comes with the wrong plug to charge it. Dont waste your money. It a novelty
Reviewed in the United States on June 20, 2024
Verified Purchase
Don’t waste your money. It has the wrong plug to charge it with other eco products.Don’t waste your money
8 people found this helpful
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O0oJMKo0O
5.0 out of 5 stars Great product
Reviewed in the United States on October 26, 2023
Verified Purchase
Love it
Quality product. ECO app is great accommodating. Ease of use is simple. Theres a comfort in knowing you still have some power when you lose power. I bought mine with an extra battery and a solar panel. Works great. Charges up with the wall outlet too not just solar. App provides many settings to choose whats best for you. I charged over night with wall outlet. Both units. App Set to 200w woke up in the morning and was good to go. Has an auto shutoff so i didn't need to worry.
I tested this out with my air purifier on full blast handled it no problem. Ran purifier on boost charged my phone and a flashlight for more then an hour ECO used 3% battery life.
12 people found this helpful
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