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EF ECOFLOW

EF ECOFLOW Extra Battery for Delta Pro Ultra&Delta Pro Ultra X, Lifepo4 Battery Backup for Home Use, Emergency, Camping, RV

  • Based on 102 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Aug 13
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Style: DELTA Pro Ultra Battery


Features

  • Expandable capacity - Increase the capacity of DELTA Pro Ultra&DELTA Pro Ultra X with an extra 6144Wh.
  • The Highest Safety Standards: EV-grade LFP cells, dual BMS, and 3-level safety architecture.
  • Plug-and-play without setup. And use the EcoFlow app to monitor and control.

Description

Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Storm Guard Mode sends real-time alerts through the app and can automatically charge your DELTA Pro Ultra X to 100% using solar or grid power. EcoFlow DELTA Pro Ultra X, paired with the Smart Horme Panel 3 or Smart Gateway, switches your whole home from grid to batterypower in under 20ms-faster than a blink. The lights stay on, Wi-Fi stays up, and even the game console keeps running. Zero delays. Zero disruptions. With Smart Home Panel 3, tag appliances by priority in the app. Essentials stay powered while non-essentials are throttled-extending backup time by up to 42%. EcoFlow AI Assistant fine-tunes power use in real time, adapting to weather, usage, and solar input.

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


Wattage: 7200 watts


Fuel Type: Electric


Power Source: Battery Powered


Recommended Uses For Product: Camping, Commercial, Residential


Voltage: 120 volts


Output Wattage: 7200


Additional Features: Expandable Capacity, LFP Battery


Engine Type: Battery-based


Total Power Outlets: 1


Engine Power Maximum: 7.2 KW


Starting Wattage: 7200 watts


Running Wattage: 7200 watts


Runtime: 720 hours


Item Weight: 111.8 pounds


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


Brand Name: EF ECOFLOW


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


Model Name: DELTA Pro Ultra Extra Battery


Model Number: EFYJ751-BP


UPC: 842783132925


Unit Count: 1 Count


Manufacturer: EcoFlow


Item Type Name: portable power station


Manufacturer Part Number: ‎EFYJ751-BP


Warranty Description: 5 year manufacturer


Color: Silver


Material Type: Lithium Iron Phosphate (Lfp), Steel, Aluminum


EU Spare Part Availability Duration: 10 years


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 13

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • I love my DPU EB
Style: DELTA Pro Ultra Battery
Review Image by Amazon Customer
Review Image by Amazon Customer
Our son is a huge ecoflow fan so he recommended for us to get the ecoflow delta pro ultra! He has an extra inverter so it turns out that all we needed to buy was the battery itself! It’s great since we got to save money instead of buying the whole system! The battery is very heavy but at 110lb or so we aren’t too old to move it quite yet! (In our 70s). Our son recommended us to use it to backup our refrigerator since we don’t yet have the smart panel installed so we can’t quite tie it into our home, and our HOA don’t allow for solar panels, but my son and I ran a test and this thing is running our refrigerator as we speak and it’s been two and half days! Still got around 7% left! It’s a game changer for retiree like myself because I travel a lot with my wife and often gone for weeks, so being able to back up my fridge for so long really gave me the peace of mind. I also own some rental property and to be able to power up a tenant’s home during an outage is also quite useful! Nothing make happier tenants than light and warmth. Lastly, my beautiful grandkids love to play with this big instrument. My naughty son even shove his sister away just so he can play with it. She keep saying “sheer!” I think she wants to play too. ... show more
Reviewed in the United States on September 21, 2025 by Amazon Customer
    • Outstanding Service!
Style: DELTA Pro Ultra Battery
Review Image by Amazonyyyy
Review Image by Amazonyyyy
Review Image by 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
    • 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
    • better than powerwall by a mile
Style: DELTA Pro Ultra Battery
So far I love this product, it has made possible the ability to have whole house backup without all the nonsense of the powerwall it has its own inverter, its own charger and the multiple ways to to charge. It has a 6kw capacity per battery and expandable! The cost is substantially less expensive than the alternative. So far 5 stars! ... show more
Reviewed in the United States on June 15, 2024 by bill hronick
    • Don’t trust that 0% financing or 5% cash back will be applied as you selected at checkout.
Style: DELTA Pro Ultra Battery
I purchased an EF ECOFLOW Extra Battery for Delta Pro Ultra, Lifepo4 Battery Backup for Home Use, Emergency, Camping, RV on Cyber Monday Dec 1, 2025 that was advertised for 42% off and 0% interest for 12 months. The battery arrived quickly and is of nice quality and works as advertised. However ………. When the statement came in my email the only thing that was correct was the purchase price. It was set up as a regular purchase with installment payments of $49/mo which would incur significant interest payments over the course of the installment payments. I had to contact Synchrony to get the 12 month 0% interest plan applied and the correct monthly payment set up in order to pay it off in 12 months to avoid the interest. I haven’t seen a 5% cash back payment show up anywhere. Still waiting. I’ll never trust another Cyber Monday or Black Friday purchase to go as promised for special financing or 5% cash back promises. I’ll only make the purchase if I can pay for it completely at checkout. ... show more
Reviewed in the United States on December 11, 2025 by Susan Leigh
    • 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
    • Heavy is the crown, when you’re the best
Style: DELTA Pro Ultra Battery
Man are these things heavy! I’m not weak, I have a toddler I must raise above my head at least 100 times a day - and she weights 25 lbs, so that’s easily 2,500 pounds I curl each day…. But god bless my FedEx driver for not burning my house down because when I ordered 3 batteries and the head unit, I had no idea that these things weight 120lbs a piece. And I’m not a scientist but for some reason, things tend to be heavier in the winter time! So after I only slightly struggle to get these into my garage, I unbox them all like a kid at Christmas - and let me tell you, it is as easy as legos to put together. It all just makes sense. Have them all charged up and waiting for the electrician to come this week to install the Smart panel 2, so we will be all set for a few days should the amazing Texas power grid decide to crap out. They are expensive but I plan to continue to buy more batteries in the future to protect my family and home. ... show more
Reviewed in the United States on January 22, 2024 by Pkp4life
    • Battery storage is a necessity
Style: DELTA Pro Ultra Battery
Increased capacity for Delta pro Ultra. Keep the lights on with this extra power. Run the fridge and freezer during power outages.
Reviewed in the United States on October 17, 2024 by John

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