Customer reviews from ecoflow
EcoFlow - DELTA Pro 3 Extra Battery (4096 Wh Capacity)
Average customer rating
5
(4 Reviews)
Rating breakdown 4 reviews
5 Stars
4
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
Customer Reviews for EcoFlow - DELTA Pro 3 Extra Battery (4096 Wh Capacity)
Customer Rating
5
Perfect solution for a tiny house
on January 7, 2026
Posted by: Tiny house power
Impressed with the turn key connectivity and function. Added this as an initial package purchsse. Saving to purchase battery to be the whole house power ststion for my tiny house. Currently using the Delta Pro 3 with 8 keh syorsge plus two Delta 3+ systems and two Delta 2 with Delta 2 Max battery systems. Been off grid for two plus years with dependsble power. Glad I decided to use EcoFlow for all my power consumption.
Written by a customer while visiting ecoflow
Customer Rating
5
Well worth the investment
on November 14, 2025
Posted by: N2rudr
I bought 4 extra batteries almost a year ago and have cut my electricity usage by 90%. They have worked flawlessly and have exceeded my expectations.
Written by a customer while visiting ecoflow
Customer Rating
5
Plug and play!!
on November 15, 2024
Posted by: Anonymous
from Piqua, Ohio
Got it delivered, plugged it in, and the system started charging it right up! I love that there's no panel on the front (that was confusing, with the Delta 2). My only question - WHEN WILL YOU HAVE MORE? I want to order a 2nd one!
Written by a customer while visiting ecoflow
Posted by: patrick c
from California
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
It is really a nice to have as a reliable back up battery.
Written by a customer while visiting ecoflow