The extra battery is a great way to expand the capacity of the system, and it does it's job well. However, the way the extra battery is presented in the app is bizarre. The connecting cable is extremely stiff and clunky.
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5
Most Advanced Generator in its Class
on May 18, 2022
Posted by: EnjoyTheOutdoors
Frequency of use:Monthly
Gender:Male
I own this Delta Pro as well as three other Ecoflow products. I also own other brands including Jackery. In my opinion the Delta Pro wins out in multiple fronts - including the battery chemistry used, cost per watt hour, and the supporting app and features which can be customized within. Among these the charge rate was my favorite aspect to control. I picked this up for power outages in my area and so far it’s served that purpose well. It’s more power than I actually need but it’s nice to not worry about “whether it will work” when powering any of my appliances. Build quality is very good and from the various tear down videos I’ve seen the consensus seems to support that this is a well built and well engineered product. I also picked up the cover for it which is visible in the picture. It also fits the Pro well and allows operation without removing it and stores the ac adapter. I’ll also mention that Ecoflow seems in general to keep pushing the market forward with their products which is a great thing. Solid product and good purchase.
Battery works as advertised Ive got 3. The only complaint is the cable that conects to the Delta Pro is absurdly short and the add on batteries must be located alongside the Generator. You can't put the battery below the generator. I was hoping to put my generators on an upper shelf and the generators below. Cannot be done with the short cables.
I really like the Delta Pro extra battery but it has no inputs. How hard would it be to add some functionality and it would even look better? The battery comes as advertised. I would still recommend this extra battery to a friend because it is awesome. The charge rate is very fast (about two hours from one third charge). The price is right and quality is outstanding. It is super easy to use, my 8 year old grand daughter had it up and running in no time. Even my wife thinks this is cool. The product reviews just don't do it justice. I compared it to the other main players and they just did not add up. BLUETTI didn't even come close when compared to ECO FLOW DELTA PRO! I live in Albuquerque New Mexico and we have lots of sun here so I also bought two solar panels and that's the main way I keep these two bad boys charged (my ECO FLOW Delta Pros).
I bought the extra battery after I added a couple of 400 watt solar panels. It definitely charges, but no second fan which is a relief. It is important to update the firmware on the app for the latest algorithm as to how the two batteries discharge. It is a complex task deciding how much juice from the second battery when the first battery has a load. It seems like a lot of times it is about half. When charging that is the case and when running my microwave if definitely draws from both batteries. The percentage full display on each will never be the same and I recommend setting your delta pro with minimum and maximum charge settings (like 5%-90%). If the delta pro runs down to zero I don't know if the extra battery work in the most efficient manner.
I bought this on Christmas Day. It is performing perfectly.
I have only two complaints. While it is well known that the documentation for the Delta Pro and the Smart Panel are limited in details and usefulness. The Delta Pro battery has taken it one level lower by not providing any documentation at all. I guess it’s hard to find fault if it doesn’t exist. Sneaky.
I am also disappointed in the fact that an interface cable isn’t provided and it’s not recommended when you order the battery, even though the battery is useless without it.