Customer reviews from ecoflow
EcoFlow - RIVER 28.8V Extra Battery
Average customer rating
4.9 out of 5
4.9
(48 Reviews)
Open Ratings Snapshot
Rating breakdown 48 reviews
5 Stars
42
4 Stars
5
3 Stars
1
2 Stars
0
1 Star
0
96%of customers recommend this product. 
(
22 out of 23
)
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Customer Reviews for EcoFlow - RIVER 28.8V Extra Battery
Customer Rating
5 out of 5
5
Happy w/ product
on August 20, 2022
Posted by: Dale Kildal
from DFW, TX
Frequency of use:Monthly
Gender:Male
Verified Purchase:Yes
I was able to double to River capacity and have already used it during an over night black out. I'm very thankful for my Ecoflow products!
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
Don’t pass this up
on August 21, 2022
Posted by: Anonymous
from Atlanta Georgia
Frequency of use:Monthly
Gender:Male
Verified Purchase:Yes
If you have the River, you gotta have double the run time. Cool light show is an added bonus
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
Extreme run time
on August 23, 2022
Posted by: Orlando
from Kingston, Jamaica
Gender:Male
Verified Purchase:Yes
Adding the extra batttery to the RIVER 600 resulted in the doulbing of run time.
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
Retired Engineer
on August 27, 2022
Posted by: Bob Truelove
from Pewaukee, WI and Mission,TX( winter)
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
i opened the box, turned the EcoFlow upside-down, pulled out 4 screws, put the Extra Battery into proper connections, put the new, longer screws into place and tighten them, and BINGO; I had twice the watthours, like 580+/-. The thing is, I carry it around like a lunch box; or a 12 pack. We have a second home in rural Texas, and we went thru that Grid problem a year or so and this is what I needed to keep the refrig running to save my meat, and, keep the beer cold. This winter I'm going to build a permanent system that I can run the majority of the house with. Hopefully EcoFlow can help me do that .... GOD BLESS AMERICA
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
Great
on September 6, 2022
Posted by: Anonymous
from Nyc area
Gender:Male
Verified Purchase:Yes
I gave it 5 stars because the first item was defected.. they switched it out with no problems. Couple of questions.. to see if they can help befire sending it in ..
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
A must for the River
on September 9, 2022
Posted by: Justaregulardude
from East Brunswick NJ
Gender:Male
Verified Purchase:Yes
Buy this if you have the River. It takes it to a whole different level of battery capacity. Love my River with extra battery!
I would recommend this to a friend!
Written by a customer while visiting ecoflow
Customer Rating
3 out of 5
3
Possibly damaging the battery during use?
on September 9, 2022
Posted by: fire1962
from Texas
Frequency of use:Monthly
Gender:Male
Verified Purchase:Yes
Didn’t know until after much researching that the battery shouldn’t be allowed to drain all the way. This is problematic for those whom are wanting to use this off grid/camping. Running a small appliance at night and having to worry that it may drain the battery completely, to keep it from being damaged, won’t be fun. If this is an issue, it should be advertised in the forefront. Maybe add an alarm/alert on the unit, and/or in the app., when it gets too low…
Written by a customer while visiting ecoflow
Customer Rating
5 out of 5
5
Spare battery
on September 10, 2022
Posted by: Ray T
Gender:Male
Verified Purchase:Yes
Great battery, bought an extra one for my river max
Written by a customer while visiting ecoflow
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