Customer reviews from ecoflow
EcoFlow - DELTA Pro 3600Wh Smart Extra Battery
Average customer rating
4.8
(78 Reviews)
Rating breakdown 78 reviews
5 Stars
65
4 Stars
13
3 Stars
0
2 Stars
0
1 Star
0
100%of customers recommend this product.
(
19 out of
19)
Customer Reviews for EcoFlow - DELTA Pro 3600Wh Smart Extra Battery
Posted by: Ccisvak
from Vermont
Gender:Male
Verified Purchase:Yes
Very easy set up and charging. The wheels are sturdy and the wireless interface worked very well. Hooked up to the delta pro and smart generator also seemless. Had to use it for a power outage for 12 hours and worked running TV, internet and refrigerator and extra freezer. No issues at all. Great product
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
4
Great products, but limits on installation options
on May 30, 2023
Posted by: Sheela H.
Verified Purchase:Yes
Coupled this with my Delta pro main unit. All is working well, but really nee more flexibility on the connection cables. The basic ones are just long enough if the units are directly side by side. This limits where one can place the equipment (eg stacking or wanting to leave more space between units in poorly ventilated ares to improve air flow.
Written by a customer while visiting ecoflow
Posted by: Chuck E.
from Northeastern Oregon
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
Really pleased with the two extra batteries I bought for the two Ecoflow Delta Pros I bought. It's best to learn a little about how these batteries work so they work most efficiently and last the longest. Best way to do that is by joining one the Facebook Delta Group. Lots of knowledgeable and helpful members. The battery is heavy like the Delta Pro it supports because it has the same capacity, 3.6K Watt hours. The cable that attaches the battery to the Delta Pro is short so consider that when you are planning where to put it. The good thing is that two batteries can be attached to the Delta Pro, giving a total of 10.8K Watt hours.
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Posted by: ChrisofTX
from Texas
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
Works like a champ! Added 3,600 watts to my Delta Pro storage capacity.
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Posted by: Electric52
from Rockland NY
Frequency of use:Monthly
Gender:Male
Verified Purchase:Yes
great expansion to the delta pro. my biggest gripe is that the cables stick out almost an extra foot making it a little hard to build into a small footprint. I wish there were right angle cables or adapters available.
Written by a customer while visiting ecoflow
Posted by: jim888
from Houston Texas
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
It was bought by mistake, but it is working well. It gives my Delta Pro power station a nice reserve power. I wish that I could charge it independently like a Bluetti. I like the portability of wheels and handle to help move it around.
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Posted by: R L Davis
from Culver Oregon
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
I’ve had my delta Pro smart extra battery about a month now. After using my Delta pro alone all summer I got concerned it would not have enough power to get me thru the night in the winter months on our off grid property. In summer with more daylight hours I would be down to mid 40’s percent battery life in the morning and that’s without using the propane furnace in my RV. After connecting the eco pro smart extra battery and using the furnace (since it’s getting colder at night in Kate September) I now have about 80% average battery life left in the morning. I charge using 6 240 watt solar panels which charge both units in a matter of a few hours. I have a firman remote start generator in case I have No solar during the day and it charges both units in a few hours as well. I’m looking forward to purchasing the EcoFlo smart generator next year and I will be set.
Written by a customer while visiting ecoflow
Customer Rating
4
EcoFlow Delta pro extra battery
on June 11, 2025
Posted by: Handy
from Fort Myers Florida
Gender:Male
I have the Delta pro and one extra battery at the moment and I'm looking to purchase a second battery. I like everything about the units except what another reviewer said, the cable to hook the extra battery up it's so short the extra batteries have to be on the two sides of the Delta pro power station. I have them in a small laundry room on a shelf and I wanted to put the extra battery on the shelf but since the cable is only 3.2 ft or meter long I can only put one battery on the shelf above the Delta pro power station. So if I want to add another battery it will have to be on the floor right next to the power station for the cable to reach. Unfortunately then my dryer door will not open more than a third. They said I could buy the 16-ft cable with the smart battery adapter which is way too long. Can't we just get a seven or eight foot cable I hear a lot of people with the same issue. I'm sure 16 ft cable plus smart battery adapter isn't cheap either. And then there's 16 feet of cable to have hanging around. That's the only reason I took one star off everything else is great but I'm in a bind hooking up the extra battery with one option, buy 16 ft cable with extra battery adapter. I called EcoFlow they have no intention of making a 8-ft cable or just one that would actually work. The ease of use is very easy but I took a star off because I had to take one off because no one thought of making a cable long enough to stack the batteries. And it's not some cord you just go in the store and buy one.
Written by a customer while visiting ecoflow