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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.
Description
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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: 24.7 pounds
Voltage: 110 volts
Output Wattage: 1800
Special Feature: Fast charging
Included Components: LFP Battery(LiFePO4)
Wattage: 1024 watts
Fuel Type: Electric
Power Source: Solar Powered,Battery Powered,Electricity Powered
Recommended Uses For Product: Camping, Residential
Voltage: 110 volts
Output Wattage: 1800
Additional Features: Fast charging
Engine Type: 4 Stroke
Total Power Outlets: 15
Engine Power Maximum: 2700 watts
Starting Wattage: 2700 watts
Running Wattage: 1800 watts
Frequency: 50 hertz
Runtime: 1 hour and 20 minutes
Item Weight: 24.7 pounds
Item Dimensions L x W x H: 8"L x 11"W x 15"H
Brand Name: EF ECOFLOW
Included Components: LFP Battery(LiFePO4)
Model Name: DELTA2 EB
Model Number: EFD330-EB
UPC: 842783123411
Unit Count: 1 Count
Manufacturer: EF ECOFLOW
Item Type Name: DELTA2 Extra Battery
Manufacturer Part Number: EFD330-EB
Warranty Description: 5 year warranty
Color: Black
Material Type: Plastic
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
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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Similar Products
Top Amazon Reviews
Style: DELTA 2 Smart Extra Battery
"Very good purchase. The battery is of excellent quality, easy to connect and expands the power capacity efficiently. It works perfectly with my EcoFlow DELTA 2 and offers great autonomy during blackouts, trips or outdoor activities. The construction is solid, the load is fast and the performance has been excellent. The investment is totally worth it. I recommend it 100%!"
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Reviewed in the United States on July 9, 2026 by Daniellis
Style: DELTA 2 Smart Extra Battery
Well it hooks up well with the original battery and charges well also . During a power outage a week ago , I plugged in my surge stip which had my TV , T-Mobile Internet and a fan at low speeds and it worked wonderfully and had 24 hours left to also run my CPAP machine. So , so far it's been great as I also have a solar panel only (200 watt) if there were something major to happen... I hope it continues to be reliable as I have the extra wattage now to run a electric cooler/ freezer if the power went out for long period of time .
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Reviewed in the United States on July 14, 2026 by Shone2527
Style: DELTA 2 Smart Extra Battery
I purchased this extra battery to pair with my Ecoflow 1024wh unit. It has performed perfectly. I use this at my off-grid property and having the extra power has been great. No problems with either and would highly recommend this product !
Reviewed in the United States on June 20, 2026 by garco
Style: DELTA 2 Smart Extra Battery
well packed shipment Same high quality as the Delta 2 I have Will buy another
Reviewed in the United States on July 7, 2026 by D L.
Style: DELTA 2 Smart Extra Battery
I have a Ecoflow Delta 2 unit and this new extra battery. When the power goes off, I have one large 85 inch TV (pulls 220 watts), home router, provider fiber box, Dell large workstation/server, Sonos sub, Sonos Speaker, Synology backup and a 5 port switch. When power is goes out, this lasts half the day with TV on, full day with TV off. This is the reason for the purchase of the expansion battery! Setup: Just take the plug connector, plug it in, turn it on with power button, one and done. EcoFlow App: This shows in the app when clicking on the battery area. You will see the two devices there. Stacking: I have the original unit on the bottom and the new unit on the top. It fits perfect and is not wobbly in any way fashion or form. Benefits: When you power is down, plug your power strip into this and you will have power to all of your essentials, such as internet router, TV, provider endpoint router, refrigerators and more. Be online and surfing, keeping up with the news and more with these devices. The best buy I have purchased in years! In closing: By far EcoFlow with its LFP batteries (much safer) are quick to charge, lifesaver during outages and fit nicely and look professional in your home. Feel comfortable purchasing these devices as they are very well made and fulfill power needs when required.
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Reviewed in the United States on May 20, 2026 by A m a Z O n F r e a K
Style: DELTA 2 Smart Extra Battery
The reminder I just got to review its connectivity made me laugh. -It has NONE when you need it most. Ecoflow is without scruples. They sell you thousands of dollars in off-grid equipment, then require you to download an invasive app which locks you out of the settings every time it times-out. *If you set the charging speed to 500W to keep your equipment working at its best, then you have an outage and try to raise that level so you can plug it into a generator to fast-charge, you will find that you have been signed out of your account. No internet? Then you are royally compromised, and stuck at 500W. Then guess what! You got the internet back and now it doesn't recognize your credentials, so it makes you create a new account. This isn't just a new play on planned obsolescence, it's wanton sabotage. After spending around $10,000 with them I've directly reached-put requesting they at least send their direct-port tablet controller they sell on eBay for the Ultras, so that I could have control over at least my Ultra unit. -They flat-out refused and attempted to gaslight me ENDLESSLY about the app's functionality. We live in the rural Rocky Mountains where help can be difficult to come by and internet connectivity and power reliability are non-existent. At best they're falsely advertising these as an off-grid solution; at worst they are doing this on purpose knowing full-well you will be left in the lurch when you need this system most. ^And those settings aren't fully locked-in, by the way. If you use pass-through while the power is intermittent and you have your system set to stop charging at 80% to protect the cells, you will often come back to see that the settings are the same but now it's at 100%; and vice versa: You have it set to stop discharging at 30% and it drains the battery to completely dead—but the settings read the same. Perhaps try Anker, or Bluetti, or better yet, if you're spending ~$10,000 like I did, maybe just pay an electrician to make you something that they can't simply disable because they feel like it. For yours and your family's safety, DO NOT COUNT ON ECOFLOW.
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Reviewed in the United States on June 30, 2026 by Perpendicular Parity
Style: DELTA 2 Smart Extra Battery
Works great and doubles my battery capacity. Charges very quickly and easily attaches to my current Delta 2. Arrived quickly and in perfect condition. I would not hesitate to purchase again.
Reviewed in the United States on March 31, 2026 by David Vohlken
Style: DELTA 2 Smart Extra Battery
Tested with the Delta 3 1500 – works great. When you press the button, both the station and the battery turn on simultaneously, and the battery’s display lights up. During operation, the station supplies power, while the battery effectively charges the station itself – meaning the energy flows from the battery into the power station.
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Reviewed in the United States on March 29, 2026 by Ihor