EF ECOFLOW DELTA 2 Max Power Station Extra Battery, 2048Wh LiFePO4 (LFP) Battery, Compatible with DELTA 2&DELTA Max 2000&DELTA 2 Max Outdoor Generators
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Availability:
20 left in stock
Arrives
Friday, Apr 24
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Style: DELTA 2 Max Extra Battery
Features
- 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 hit a capacity of 6144Wh. Ideal for home backup, RVing, outdoors or even everyday use.
- Built to Last 6 Longer. Get 10 years of daily use until hitting 80% of its original capacity. Thats down to its LFP battery chemistry giving you 3000+ cycles.
Brand: EF ECOFLOW
Wattage: 2048 Watt-hours
Fuel Type: Electric
Power Source: Solar Powered
Recommended Uses For Product: Camping
Item Weight: 42 Pounds
Voltage: 120 Volts
Output Wattage: 2048
Special Feature: Expandable capacity
Included Components: EcoFlow DELTA Max Extra Battery
Wattage: 2048 Watt-hours
Fuel Type: Electric
Power Source: Solar Powered
Recommended Uses For Product: Camping
Voltage: 120 Volts
Output Wattage: 2048
Additional Features: Expandable capacity
Engine Type: 4 Stroke
Ignition System Type: Electronic
Engine Displacement: 79 Cubic Centimeters
Runtime: 601600 hours
Total Power Outlets: 6
Frequency: 50 Hz
Starting Wattage: 3400 Watts
Color: Black/Grey
EU Spare Part Availability Duration: 10 Years
Brand Name: EF ECOFLOW
Included Components: EcoFlow DELTA Max Extra Battery
Model Name: DELTA 2 Max
Model Number: EFD350
UPC: 842783131614
Manufacturer: EcoFlow
Item Type Name: DELTA 2 Max Extra Battery
Warranty Description: 1 year manufacturer
Item Weight: 42 Pounds
Item Dimensions L x W x H: 11"L x 9"W x 18"H
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Apr 24
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
The EF ECOFLOW DELTA 2 Max Extra Battery is a useful expansion for increasing power capacity. The 2048Wh LiFePO4 battery provides a substantial boost, making it helpful for longer runtime during outdoor use, backup power, or extended projects. Connection to compatible units is straightforward, and the battery integrates seamlessly with supported models. The build quality feels durable and well-constructed, and the unit remains stable during operation. Despite the large capacity, the design is manageable and consistent with the main power station. Performance has been reliable, with steady output and no noticeable issues during use. The LiFePO4 chemistry is also reassuring for longevity. Overall, it’s a practical add-on for anyone looking to expand capacity and extend usage time.
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Reviewed in the United States on April 8, 2026 by Alyssa
I’m extremely satisfied with this power station. It’s very powerful and can run multiple devices without any issues. The battery lasts a long time, and the charging speed is impressive. The build quality feels solid and durable, and the display is clear and easy to understand. I’ve used it for emergencies and outdoor activities, and it works perfectly every time. It’s also very convenient to have dif
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Reviewed in the United States on March 19, 2026 by Arianet
This power station is hooked up to 800 watts of solar panels in series. Runs the power in a small household office and fully charges daily, with average sunshine. No more concerns over blackouts. Reliable, quiet, well built!
Reviewed in the United States on March 27, 2026 by Oldduke07
Roc solid and a steady. No issues report based on occasional use.
Reviewed in the United States on April 6, 2026 by Tracy M Brooks
This EcoFlow 2Max Extra Battery was delivered today and I am very pleased to say it so far functions very good and nothing was broken or damaged during the shipping and delivery process as before in a previous same purchase. I can confirm that the operation and functionality is exactly as described in the advertisement for this product and additional 2048 Watts to my solar generator system will definitely cover my electricity needs during this upcoming summer months and fire season when the main power supply grid is shutdown for public safety. I would recommend these devices be purchased for your homes in case of any future power outages because they are very efficient and and very easy to use and will save you money and discomfort during the upcoming months. Long story short, the EcoFlow company works with customers to help purchase their products by offering different types of payment plans that are compatible with many budgets so anyone can afford to pay for a important product that will help them during power outages that occur very frequently nowadays. Thank you (I’m pretty sure I will purchase one more extra battery so I can run my air conditioner when the heat is causing the power grid to be shut down and instead I will be enjoying my regular life without disruption and sweating in the heat waiting for the power company to turn back on the grid power supply to every house )
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Reviewed in the United States on February 21, 2025 by Mario Navarro
Update: now charging at 296 W. Much better.. originally charged it only 65 W so I contacted Eco flow. They claimed they would do an online update but after four weeks I had not seen it. Now some six months after giving up I plugged it in again to find it is now charging better. Perhaps the software update was done online. Still may take six hours to fully charge, but that’s much better than the 65 W charging speed it had before. Up to four stars on this review OLD REVIEW:Will only charge at 65 W… hooked up to my plugged in Eco flow Delta two unit. This unit charges at only 65 W taking over 24 hours to recharge with the combined unit plugged into a wall outlet. I contacted Eco flow and they said they would send a “firmware update” to the unit as it’s registered in the phone app. Well that’s been 2 1/2 weeks and nothing has happened. Until this is resolved, this is going to be a lousy unit too late to return it now I just plugged it in last week. Will probably discharge and add capacity but recharging this is ridiculously slow
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Reviewed in the United States on May 30, 2025 by Larry M.
Great device, literally plug n play. Wasn't exactly what I was expecting and didn't meet my requirements. Ecoflow was great with communication. Will definitely look at more of their products.
Reviewed in the United States on March 21, 2026 by thomas/heather
This works flawlessly and makes a great addition to my solar generator power supply, I plan to purchase another ASAP! I highly recommend Ecoflow my main unit sat unplugged and unneeded for 16 months I got it out to connect my extra battery it was still at 100 percent charge!
Reviewed in the United States on February 15, 2026 by Brett Z Mason