Customer reviews from ecoflow
EcoFlow - DELTA 2 Max 2048Wh Smart Extra Battery
Average customer rating
4.8
(24 Reviews)
Rating breakdown 24 reviews
5 Stars
18
4 Stars
6
3 Stars
0
2 Stars
0
1 Star
0
Customer Reviews for EcoFlow - DELTA 2 Max 2048Wh Smart Extra Battery
Posted by: Jimmy4567
from Sf bay area
Gender:Male
Verified Purchase:Yes
Easy plug & play, hard to talk about something that just works I plugged it in and never needed to do anything else, it just quietly worked. I wish more was this seamless.
Written by a customer while visiting ecoflow
Posted by: Stewart 2023
from Texas
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
Bought this product for a backup and use this to power my iceco refrigerator. Would love EcoFlow to put usb and 12 volt on the extra battery. That would make this product very outstanding.
Written by a customer while visiting ecoflow
Customer Rating
4
Over should be good system for Direct Vent Furnace
on December 8, 2023
Posted by: Rinnai Guy
from New Hampshire
Gender:Male
Verified Purchase:Yes
I haven't needed it as of yet, but purchased a month ago and sized for AC backup to a Rinnai direct vent wall furnace. Calculated the draw of furnace and sized the EcoFlow system for appox. continuous 4-days operation without wall power. Combo of Ecoflow Delta 2 power system and Delta 2 Max smart extra battery provides 3 kWh of power. Only downside is that you can't disconnect, remove, and recharge the extra battery on it's own. That's what I had in mind when purchased. That way I can keep running furnace with the partially charged Delta 2 alone, while I take away the extra battery to charge it back up to 100% and return and plug it back into Delta 2.
Not the case. You have to use the Delta 2 power station as the conduit to charge the extra battery. So, you'd have to remove the whole combo system to charge both the main Delta 2 and or the extra battery.
It would be a great design improvement if EcoFlow added and A/C charging input port on the Extra Battery, so it can be charged by itself.
Written by a customer while visiting ecoflow
Posted by: Typicalaimster
from San Diego
Frequency of use:Daily
Verified Purchase:Yes
Bought 2 of these to max out my Delta 2 Max. Primarily using it for peak shifting with expensive power in California. Works great and I have a ton of power at the end of the night.
Written by a customer while visiting ecoflow
Posted by: Jon A
from Washington PA
Frequency of use:Monthly
Gender:Male
Verified Purchase:Yes
I bought the Delta 2 Max Extra Battery for many reasons. Super portability, powerful, high performance, reliable and affordable. This compliments the Delta 2 Max perfectly, and when connected, the Delta 2 Max is a true portable beast. With 4096Wh of power when connected to the Delta 2 Max, we have all the power we need and more. We use it for camping, at the beach, off grid parties, work sites, emergency power at home and much more. If you need power, and lots of it, this is the perfect duo, and the Extra battery makes it possible.
Why four stars? I wish that EcoFlow would have added DC outputs to make this truly a versatile extra battery. Without the Delta 2 Max, it is useless. Many other brands have added DC output capability to thier expansion batteries to add value and versatility. Come on EcoFlow, get with it, DC output would make this the absolute best out there.
Written by a customer while visiting ecoflow
Posted by: Bigbob2242
from Rockport, Texas
Gender:Male
Verified Purchase:Yes
Perfect description fast delivery. Haven’t had the chance to use it but I’m sure it going to work very well
Written by a customer while visiting ecoflow
Posted by: Scott In Montana
from Montana
Frequency of use:Daily
Gender:Male
Verified Purchase:Yes
The battery works very well with my Delta 2. I am using these to run my refrigerator and freezer in my garage. I have installed fixed solar panels that have so far provided enough power to work for most of the day. The automation features and reserve power settings are very useful. I have already been able to use the units to power my refrigerators during a power outage. Great combination.
Written by a customer while visiting ecoflow
Posted by: Bay Area CA
from CA
Frequency of use:Daily
Verified Purchase:Yes
The extra MAX battery is working great with my Delta 2. I was waiting for EcoFlow to build an LFP extra battery, I did not want to buy the 800 cycle Lithium Ion type which does not match the LFP chemistry of the Delta 2. It would be an improvement to be able to charge the Extra Battery by itself, with solar or from the wall. For our setup, side-by-side, I'd like to have the option of plugging the cord into the BACK of the units (not the SIDE), so they could sit closer together. The ability to manage the batteries remotely with the app, such as Energy Management, is a great feature.
Written by a customer while visiting ecoflow