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4.7
13 Reviews
5
69% (9)
4
31% (4)
3
0% (0)
2
0% (0)
1
0% (0)
92% Recommend this product (12 of 13 responses)
By Eric
Central MN
Solid product with great track record, still a little pricey.
September 17, 2025
This expansion battery rounds out my DPU stack with my desired storage capacity. I have several EF products but the whole home backup solution is my largest investment. I pay more for EF as I require the portability and ease of use for other family members not familiar with more complicated solutions.
Pros
  • Ease of use and configuration
Cons
  • heavy
  • expensive for the kWh
By JS
NH
Nice product, a few issues that would make it great
June 1, 2025
We use the batteries as a secondary storage for our solar panel system. We pull power off the house (240V via the generator port) and then use that power at night to run a few devices and charge our EV cars. Overall this works quite well!
Pros
  • Overall a great system!
Cons
  • WE would like to connect a wind turbine generator directly to the unit. This can be done but
  • 1) we can't receive power from the generator port & the DC input ports at the same time; making this option not viable.
  • 2)the input ports seem to be quite sensitive (over voltage and/or amps will damage the units). So we would need secondary electronics from stopping this damage. It would be very nice if the system had a voltage regulator or other electrics to avoid this.
  • So, I will have to store the wind turbine power separately and then nightly input it into the ECO system either via DC input or AC 120V. Not ideal, but workable.
By Armon
New Mexico
Fast shipping, good product.
February 13, 2025
Fast shipping. Product seems to be good and working. Would buy again, if needed.
By Colleen
Rancho palos verdes ca
Ecoflow off grid
January 30, 2025
Our home was disconnected from electricity 5 months ago, by the utility company. 400 homes affected. Many of us have found Ecoflow inverter/batteries w solar and a generator to help get life as we knew it back. I’m wanting 1 more battery. Watching for a sale.
By Alan
Temecula, CA
Able to fill-out my full 60wHh capacity with these last 4 batteries.
January 23, 2025
Earthtech's rapid response really helped me out during the CA wildfires. I ordered these before the fires and received them just before the fires. I had them up and running the same day with enough time to charge them full. I have not lost house-power even though the power company has turned off the grid for more than 4 days. Thanks for expediting these out. GREAT customer service.
By Timothy
Lexington, SC
Excellent Product
December 27, 2024
Excellent Product from Timothy.
By Dave H.
Florida
Love the Eco Flow Ultra
November 18, 2024
Addition to my system with this purchase of 2 more batteries. So nice and easy!
Pros
  • Easy to add on to existing system.
  • build over time instead of all at once.
By Dustin
Dallas
Delta Pro Ultra Battery
November 9, 2024
Best price available for these batteries! It arrived in just a few days! Works great, will buy more in the near future!
By Mptech
Garden City,MI
Yes Earthtechproducts for people that are thinking about it is a legit company
November 8, 2024
They Are Legit. I was scared to buy from them but went forward with it, taking a chance. I wasn't gonna be home for the delivery on this item so it was sent to Fedex center instead. You can easily fit this in a regular car if you take it out of the box 1st put it in your car, then put the box in afterwards. It weighs a lot but it's doable for a brief moment.
By Gary
St Louis Missour area
Build quality of this battery is excellent.
November 8, 2024
Build quality of this battery is excellent. Very easy to add to my existing set of Ecoflow batteries
By Rich
TN
great product at good price
November 3, 2024
great product with excellent support. Shipping could be faster though.
By Jimmy
Parrish Florida
Nice battery, but...
August 9, 2024
Batteries have no mechanism for cooling. Running two with low loads on inverter the batteries run well into the hundreds. ambient temp around 88, batteries running 109. Too close for the 113 limit, and no way to cool.
By Tim
New Port Richey, FL
Great Product
July 31, 2024
This battery makes a very easy addition to the system I already have. No fuss no muss. Very easy to connect with the supplied cable. Was very well packaged and survived a less than co-operative Fed Ex driver. Will look to Eco Flo for my next purchase.

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