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EF ECOFLOW

EF ECOFLOW Extra Battery for DELTA Pro Ultra, Lifepo4 Battery Backup for Home Use, Emergency, Camping, RV

  • Based on 111 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by EcoFlow Inc.
Arrives Sep 9 – Sep 14
Order within 14 hours and 59 minutes
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Style: DELTA Pro Ultra Battery


Features

  • Expandable Capacity. The rated capacity of one battery is 6144Wh. To expand capacity for powering your appliances or backing up your whole home, one can connect up to 5 batteries to an inverter or up to 15 batteries to 3 sets of inverters, which makes the total capacity add up to about 30kW to 90kW.
  • Constant Use for over 10 Years. DELTA Pro Ultra supports LFP battery which provides 3500 cycles till it lowers to 80% capacity. Thats almost 10 years of regular use. Every battery houses an integrated BMS module to regulate its voltage current, and temperature, keeping it safe,secure, and long-lasting.

Brand: EF ECOFLOW


Wattage: 7200 watts


Fuel Type: Electric


Power Source: Battery Powered


Recommended Uses For Product: Camping, Commercial, Residential


Item Weight: 111.8 Pounds


Voltage: 120 Volts


Output Wattage: 7200


Special Feature: Expandable Capacity, LFP Battery


Included Components: DELTA Pro Ultra Battery, EcoFlow Battery Connection Cable


Brand: ‎EF ECOFLOW


Wattage: ‎7200 watts


Fuel Type: ‎Electric


Power Source: ‎Battery Powered


Recommended Uses For Product: ‎Camping, Commercial, Residential


Item Weight: ‎111.8 Pounds


Voltage: ‎120 Volts


Output Wattage: ‎7200


Special Feature: ‎Expandable Capacity, LFP Battery


Included Components: ‎DELTA Pro Ultra Battery, EcoFlow Battery Connection Cable


Color: ‎Silver


Product Dimensions: ‎26"L x 18"W x 8"H


Model Name: ‎DELTA Pro Ultra Extra Battery


Engine Type: ‎Battery-based


Runtime: ‎720 hours


Total Power Outlets: ‎1


Starting Wattage: ‎7200 Watts


UPC: ‎842783132925


Manufacturer: ‎EcoFlow


Part Number: ‎‎EFYJ751-BP


Item Weight: ‎111.8 pounds


Item model number: ‎EFYJ751-BP


Style: ‎DELTA Pro Ultra Battery


Item Package Quantity: ‎1


Special Features: ‎Expandable Capacity, LFP Battery


Batteries Required?: ‎No


Warranty Description: ‎5 year manufacturer


Date First Available: December 25, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 9 – Sep 14

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Easy to setup and works
Style: DELTA Pro Ultra with Extra Battery
Very well packaged, everything works as described. Have not gotten an outage yet but tested the system to run the fridge and all is good. Setup and application installation was straightforward. Updated the firmware and seems to hold charge very well.
Reviewed in the United States on July 22, 2025 by EmadS
    • Awesome system
Style: DELTA Pro Ultra with Extra Battery
In my opinion, this is the best solar generator out there. You can add extra batteries to the system to meet your needs.
Reviewed in the United States on August 18, 2025 by BigChris430
    • Highly reliable and effecient
Style: DELTA Pro Ultra Battery
Echo flow product are without a doubt the most dependable solar power storage available. They are very heavy and require hel to stack them for a whole house solar power system. I love mine, and highly recommend the product to anyone building a solar power system for your home or camp.
Reviewed in the United States on July 8, 2025 by Donald Cart
    • Best off-grid system
Style: DELTA Pro Ultra with Extra Battery
This is a well-designed system. A key benefit is that it can accept 120 or 240 volts in the AC charging port and high voltage in the DC charging port, accommodating multiple types of solar panels, especially series-connected panels. Second, the system is modular, allowing for multiple inverters, each with a battery stack. Lastly, the inverter has very low noise. This is some sound engineering. ... show more
Reviewed in the United States on July 21, 2025 by Anthony Diepenbrock III
    • Flimsy and bulk
Style: DELTA Pro Ultra with Extra Battery
Review Image by Ryan Ryan
Review Image by Ryan Ryan
Review Image by Ryan Ryan
Review Image by Ryan Ryan
Review Image by Ryan Ryan
I bought this for my outside office, so was trying to move it out to where my solar panels meets the plugs. Moved it about 10 feet when I heard a crack from the castor wheels and the entire thing toppled over onto me, I got a few bruises and cuts. EcoFlow should’ve know if they labeled this durable and moveable, castor wheels should’ve lasted over at least FLAT concrete terrain AND at least more then 5 minutes and they even advertised 5 batteries AND a inverter, that didn’t even happen. The solar ports don’t work anymore and yes, I plugged them into other generators and they worked wonders pulling in more then 400w, but the solar ports don’t work anymore so I have to use the AC to charge the battery, I didn’t even get to use it and it already broke ... show more
Reviewed in the United States on October 29, 2024 by Ryan Ryan
    • Buy only on sale... VERY heavy item...!
Style: DELTA Pro Ultra Battery
Good price, when on sale.... very very heavy.... watch your back. Does as expected... hope > 5 yrs duration... :)
Reviewed in the United States on June 9, 2025 by NVa cold cut
    • Lots of power + plug and play
Style: DELTA Pro Ultra Battery
I purchased this battery to go with my Delta Pro Ultra. I live where the power goes out regularly enough it's important to be able to go a few hours without power or to provide my own. I sometimes work from home and I actually lost power today. I ran this battery attached to the Delta Pro Ultra and it got me through the power outage with plenty to spare. I was able to keep all my technology items going and keep working through the outage. Other than weighing a ton and being a lot of weight to handle on your own, these are pretty simple devices. Simply plug it in to the delta pro ultra stack with the provided jumper cable and away you go. You might be able to get tax benefits/credits (will need to do your own research) based on the amount of power one of these batteries provides. I intend to do this and keep buying batteries, as I can, to max out the stack at 5. These are pretty expensive is my main complaint so time your purchases with major shopping events like prime day and you can get a pretty decent discount here on Amazon. Amazon isn't the only place that carries these but the prices here seem to track with other places as sales happen at the same time. NOTE: you do need the Ecoflow Delta Pro to use this. I am not aware of a way to use this battery any other way. ... show more
Reviewed in the United States on February 13, 2025 by JLPDX
    • Outstanding Service!
Style: DELTA Pro Ultra Battery
Review Image by Amazonyyyy Amazonyyyy
Review Image by Amazonyyyy Amazonyyyy
Review Image by Amazonyyyy Amazonyyyy
Very pleased and satisfied with my order! Value for the money is great because I purchased on sale! It is extremely heavy. I believe the weight is around 70 pounds so definitely order the trolley! The design is very sleek and the big quality seem very good! The capacity for energy storage is excellent and the noise level is minimal! Their customer service is outstanding. I ran into an issue receiving an inverter with software issues. Sent it back to the company and they had a new one out within a week. I would definitely recommend! ... show more
Reviewed in the United States on March 18, 2025 by Amazonyyyy Amazonyyyy

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