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

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.

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!

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.

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!

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.

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.

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.

Increased capacity for Delta pro Ultra. Keep the lights on with this extra power. Run the fridge and freezer during power outages.

Brilliant addition to our battery powered backup system and Best feature was Black Friday savings of 27%.