DELTA Pro Extra Battery 3600Wh, 2.7H to Full Charge, Battery Backup for Home Use, Blackout, Camping, RV

I absolutely love these EcoFlow units. This Delta Pro Extra Battery is no exception. I own several EcoFlow products, and they’ve consistently been at the top of my list compared to other brands I’ve tried. This extra battery connects to the Delta Pro easily. It is heavy, so you may want someone to help you move it, but the wheels make rolling it into place simple. It comes with a very solid, thick connection cable that attaches securely to the Delta Pro. The extra battery has given me a huge boost in runtime. We use our Delta Pro as part of a backup system with a transfer switch, and adding this battery has made everything work even better—especially during outages and peak-hour usage. We already have solar on the house, so pairing that with EcoFlow has actually helped us reverse our electric bill. Pretty amazing. One of my favorite things about EcoFlow is their app. It’s smart, reliable, and shows exactly how long you have left on your battery, how long it will take to charge, and the wattage each device is pulling. I also love that you can use third-party smart plugs in the EcoFlow app; I use Tapo plugs and they work great. You can set timers and manage everything right from your phone. Charging flexibility is another big win. Whether I plug it into a standard outlet or charge it through solar, it’s quick and efficient. I personally charge mine at a lower wattage, but it’s capable of charging much faster if needed. EcoFlow always has great deals, excellent customer support, and a dependable honor system. This extra battery was a must-have add-on for my home setup, and I’m thrilled with how much more power and freedom it gives me. A fantastic upgrade.

Bought these as back-up in case of power loss. Have not used in emergency situation yet, but seem to be a quality product

Works well with my EcoFlow Delta Pro. After hooking up to the EDP, I charged it to 100%, then shut both down, waited 30 minutes. Started the EDP2 and held the power button for 20-30 seconds, then both were balanced. The only downside to the EDP2 is that you can only use 2 EBs and only 1600-watt solar.

My Delta Pro +extra battery wears several hats. Though I originally purchased this item to provide power to my RV while dry camping, I discovered that I could also connect this unit to the manual transfer switch I had already installed on my house to supply emergency power for my house for a few hours instead of using my gas generator. I prefer this method to using the gas generator because it is quieter and quicker and easier to start up and get going. So far, I have yet to have a power outage last longer than the capacity of my Delta Pro +extra battery but I am prepared just in case. In addition to this, I have four 400W solar panels connected full time to my Delta Pro to help keep down my energy costs. Connected to my manual transfer switch, I was able to do this without going through the expense of hiring an electrician to install a grid tie inverter. Instead, through the manual transfer switch, I am able to supplement my home electrical with approximately 7kw per day which saves me about $50-$60 per month on my electric bill. Not huge but not bad for using something I already owned that would be otherwise be sitting in a box between camping trips or power outages. Also, the Ecoflow app allows me to set up a "backup reserve" which enables me to utilize every single watt of solar power generated while not allowing my battery to be depleted beyond a certain level in case it is needed in an emergency. Absolutely brilliant! BTW, I found the 400w solar panels for about $180 each so that cost will be made up in just a matter of months instead of years with a full install. Overall, I am very happy with the flexibility and usability of the Delta Pro system. My only gripe is the incompatibility with other items in the Ecoflow lineup and the short proprietary cable necessary to connect the extra battery to the Delta Pro. Come on guys! If you can't come up with a non-proprietary solution, at least provide a longer cable that connects at a 90 degree angle so it doesn't take up so much room in the back. I'd even pay extra for it if it were available as an accessory. Other than that, this is a solid unit that I hope will provide years of faithful service.

Perfect delivery. Perfect condition. Easily hooked into the Pro's within one minute. Let it charge and then go back into the app and do the update. I got the 2 Pros and 2 Smart batteries. I asked for a refund from EcoFlow for the manual Transfer Switch and upgraded to the Smart Wall Mount that instantly turns on 10 other selected breakers . With this Smart Wall Mount Transfer unit, it was best choice I made for Solar. Believe me, I studied all these YouTubers for over 18 months. Ecoflow is great to work with too. I set all 4 units in my home office. They are very quiet. Take this Marine's word, ditch the solar sales folks. Unbox and place on a wall opposite the outside power panel. Easy install. Solar or grid. I do keep my charge watts at only 400. That's a tiny switch on the back of the Pro's Ecoflow has videos on step by step too. For me, the Pros and Smart Batteries worked. Some day I hope to get 2 more Smart Batteries SO...I gotta start saving again. Semper Fi

Extends the time we can quietly run on emergency power. Easy to store, set up and charge.

Never lets me down, use it at my trailer all summer

J'aime l'idée que mes appareils fonctionnes instantanément quand arrive une panne.