EF ECOFLOW Delta 2 Smart Extra Battery, 1024Wh LiFePO4 Expansion Battery for Power Station DELTA2
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Availability:
20 left in stock
Arrives
Thursday, Feb 19
Style: DELTA 2 Smart Extra Battery
Features
- 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.
Brand: EF ECOFLOW
Wattage: 1024 watts
Fuel Type: Electric
Power Source: Solar Powered,Battery Powered,Electricity Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 24.69 Pounds
Voltage: 110 Volts
Output Wattage: 1800
Special Feature: Fast charging
Included Components: LFP Battery(LiFePO4)
Brand: EF ECOFLOW
Wattage: 1024 watts
Fuel Type: Electric
Power Source: Solar Powered,Battery Powered,Electricity Powered
Recommended Uses For Product: Camping, Residential
Item Weight: 24.69 Pounds
Voltage: 110 Volts
Output Wattage: 1800
Special Feature: Fast charging
Included Components: LFP Battery(LiFePO4)
Color: Black
Product Dimensions: 8"L x 11"W x 15"H
Material: Plastic
Model Name: DELTA2 EB
Engine Type: 4 Stroke
Total Power Outlets: 15
Engine Power Maximum: 2700 Watts
Starting Wattage: 2700 Watts
Running Wattage: 1800 Watts
UPC: 842783123411
Manufacturer: EF ECOFLOW
Item Weight: 24.7 pounds
Item model number: EFD330-EB
Date First Available: December 30, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Feb 19
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Style: DELTA 2+220W
Background: Long time Ecoflow customer going back to Delta Pro pre-launch days. Have a few other of the Delta product line including Delta Pro, Delta Pro Extra Battery, Delta Max, Delta 2 Max, Delta 2 (950). Promoted the product through the family and everybody has atleast one in the Delta series. TL:DR: The Delta 2 has a robust inverter for it's weight class. Capacity can be expanded if additional runtime is needed. Solar panel is also a solid product, getting high 80% efficiency in mid winter. Will update again during sunnier weather. For the size and weight a solid product pair for mobility. The Good Delta 2: Solid product with impressive product warranty, robust battery chemistry, and monster of an inverter for the weight package. Any 5-15P corded appliance you can throw at it should be able to run with ease with the only concerning point being runtime depending on the wattage drawn which can be supplemented if I get the Delta 2 extra battery. The Good 220w Solar Panel: Solar panel yielding 80% of rated output in winter weather, looking forward to seeing what this thing can do during the summer with clearer skies and longer days. The Not a Fan Of: Super minor and personal preference but not particularly keep on the elastic bands for the 220w. Have other mobile solar panels that are less temperamental and prone to kick back. Usage Scenario in photo: No need to worry about where an outlet is for a backyard cook out. Plugged in a electric fryer (~1200w) only used for 30 mins, ICECO G20 (all day), and the ECOFLOW Multifunctional Outdoor Camping Light. Delta 2 Unit able to handle all 3 devices and with the additional charging from the panels had enough to keep lights on through the night.
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Reviewed in the United States on January 22, 2026 by G. K. G. K.
Style: DELTA 2
I am super impressed with Amazon delivery!! Ordered this generator yesterday , wasn't suppose to be delivered till next week. They delivered the next day!!! The ice storm is coming to NC tonight and the thoughtfulness of our local Amazon to get that generator to us is amazing. Thank you Amazon!! We are also impressed with the generator. Charges fully within 3 hours. Very simple to use. And very quiet too.
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Reviewed in the United States on January 24, 2026 by Shannon Duncan
Style: DELTA 2
Outstanding Portable Power Solution for Home Backup and Beyond! I recently purchased the EF ECOFLOW DELTA 2 Portable Power Station, and it has truly exceeded my expectations. With its massive 1024Wh LiFePO4 (LFP) battery, I feel confident that I have reliable power during outages or outdoor adventures. The 1800W AC output and 100W USB-C ports offer versatile charging options for a variety of devices, from home electronics to laptops and even small appliances. What I really appreciate is its fast recharge capability and compatibility with solar panels—perfect for eco-conscious users looking for sustainability. The build quality is solid, and it's lightweight enough for easy portability. Whether it's used as a backup power source at home, during camping trips, or for emergency situations, the DELTA 2 delivers consistent, clean energy when I need it most.
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Reviewed in the United States on January 24, 2026 by Kelley E Turner
Style: DELTA 3
I recently purchased the EcoFlow power station and I’m honestly impressed with how well it works. The charging speed is incredible — it goes from almost empty to nearly full in around an hour, which is super convenient when I’m in a hurry. The battery life has also been great and it easily powers my essentials like my phone, laptop, small appliances, and even some tools. The build quality feels solid and the design is sleek, not bulky like other power stations I’ve tried. I also love that I can connect it to solar panels and monitor everything through the app. It’s been extremely useful during power outages and for outdoor trips. The only downside is that it’s a bit pricey, but honestly, the performance and reliability make it worth it. If you need a dependable portable power station, I definitely recommend this one.
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Reviewed in the United States on November 25, 2025 by TEFY
Style: DELTA 3 Classic
These power stations have really come a long way. You can now set schedules to turn them on and off. Turn on the Ecoflow Delta 3 Classic during peak hours when electricity is most expensive then off during off-peak hours all from the app! You can monitor usage and even get storm warnings too. With all these new features, it's only a matter of time before we start calling them "smart" stations! The feature that caught my attention the most is the near-instant (<10ms) switchover when the power goes out essentially making the Ecoflow Delta 3 Classic a viable UPS backup power source. It gave me the idea to hook this power station up between my fridge and my van. Under normal conditions, the fridge would draw power from the van itself. But now if I turn off the van for any reason, the power station automatically kicks and continues to power the fridge! And when I turn the van back on, it again automatically switches back to drawing power from the van! I no longer have to get into the trunk where the fridge is and switch out the cables manually. It is all seamless and truly hands-off now! One less thing to worry about on my road trips! Beyond that, I really have to give props to Ecoflow. Right from the unboxing you can tell that you are getting a quality product. The tape sealing the box that holds the charging cable has a small flap at the edge to make it easier for you to peel it off. The charging cable itself is hefty and clearly labeled. The bag that holds the instruction manual is not made of just any cheap plastic but the kind of plastic that has that soft velvety touch to it. Even the foam inside the box is of high quality. It is soft, it doesn't make that grating noise when you handle it, and it doesn't break apart and have little bits flying all over the place. The Ecoflow Delta 3 Classic itself has two nice-sized handles at the top on each side making it much easier to lift--especially in tight spots like, say, the back of a minivan. Two generous non-skid pads cover the bottom of the power station. On the input side, there is a cover that swings up to open and that can be tucked right into the power station itself and out of the way. Also, the two three-pronged outlets are oriented on their sides to flare outward so that whatever you plug into them won't get in each other's way. It's just genuine thoughtful designs throughout. All of this might seem trivial at first, but when taken altogether, it shows that Ecoflow is a company that cares. They stand behind their products and you can rest assure that you are getting great value for your money.
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Reviewed in the United States on October 10, 2025 by The_Eight The_Eight