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popularDavid_David posted Sep 03, 2025 12:29 PM
popularDavid_David posted Sep 03, 2025 12:29 PM

EcoFlow DELTA Pro 3 Smart Extra Battery - 2 pack $2799.99

$2,800

$3,500

20% off
Costco Wholesale
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Costco NEXT has returned with the best Delta Pro 3 Extra Battery 2 pack price $3499 - 20% down to $2799.99

valid thru 9/14/2025 while supplies last!

Compatibility - Works seamlessly with EcoFlow DELTA Pro 3
Scalable Power - Expandable up to 12kWh for increased capacity.
Long-Lasting Battery - LFP battery with 4000 life cycles to 80% capacity.
Easy to Use - Plug-and-play design for straightforward operation.
Stackable Design - Perfect for home or indoor power backup applications

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...ery-2-pack
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Deal Details
Community Notes
About the Poster
Costco NEXT has returned with the best Delta Pro 3 Extra Battery 2 pack price $3499 - 20% down to $2799.99

valid thru 9/14/2025 while supplies last!

Compatibility - Works seamlessly with EcoFlow DELTA Pro 3
Scalable Power - Expandable up to 12kWh for increased capacity.
Long-Lasting Battery - LFP battery with 4000 life cycles to 80% capacity.
Easy to Use - Plug-and-play design for straightforward operation.
Stackable Design - Perfect for home or indoor power backup applications

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...ery-2-pack

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Yesterday 03:26 AM
40 Posts
Joined Feb 2008
BullargetYesterday 03:26 AM
40 Posts
Good deal, but I don't have enough solar capacity to fill another battery. 😢
Yesterday 02:50 PM
129 Posts
Joined Mar 2017
LondonBenjiYesterday 02:50 PM
129 Posts
$350/kWh is on the better end from the likes of EcoFlow and Anker, but keep in mind the DIY solutions are still in the $100-200/kWh range.
You can get a DIY battery with 2x the capacity of BOTH of these EcoFlow batteries combined. (16kWh vs 8kWh) for ~$1,000 LESS than this price.
Yesterday 03:06 PM
33 Posts
Joined Nov 2023
AquaStag976Yesterday 03:06 PM
33 Posts
Quote from LondonBenji :
$350/kWh is on the better end from the likes of EcoFlow and Anker, but keep in mind the DIY solutions are still in the $100-200/kWh range.
You can get a DIY battery with 2x the capacity of BOTH of these EcoFlow batteries combined. (16kWh vs 8kWh) for ~$1,000 LESS than this price.
I have two delta pro 3s, and I've considered getting these smart batteries. But at this point I don't know whether to keep investing in the ecoflow ecosystem or start from scratch with a DIY solution. I'd like to be able to add capacity a little at a time without having to sink a couple thousand bucks each time.
Yesterday 04:09 PM
5,203 Posts
Joined Feb 2005
awer25Yesterday 04:09 PM
5,203 Posts
Quote from AquaStag976 :
Quote from LondonBenji [IMG]https://dealquestnow.online/images/misc/backlink.gif[/IMG] :
$350/kWh is on the better end from the likes of EcoFlow and Anker, but keep in mind the DIY solutions are still in the $100-200/kWh range.
You can get a DIY battery with 2x the capacity of BOTH of these EcoFlow batteries combined. (16kWh vs 8kWh) for ~$1,000 LESS than this price.
I have two delta pro 3s, and I've considered getting these smart batteries. But at this point I don't know whether to keep investing in the ecoflow ecosystem or start from scratch with a DIY solution. I'd like to be able to add capacity a little at a time without having to sink a couple thousand bucks each time.
If that's the case (and you're handy), the DIY solution is much better in my opinion, especially if you need a lot of capacity. Ecoflow is very expensive, but also very convenient.
Yesterday 10:44 PM
121 Posts
Joined Jul 2019
SmoothslYesterday 10:44 PM
121 Posts
Quote from AquaStag976 :
Quote from LondonBenji [IMG]https://api-web.dealquestnow.online/images/misc/backlink.gif[/IMG] :
$350/kWh is on the better end from the likes of EcoFlow and Anker, but keep in mind the DIY solutions are still in the $100-200/kWh range.
You can get a DIY battery with 2x the capacity of BOTH of these EcoFlow batteries combined. (16kWh vs 8kWh) for ~$1,000 LESS than this price.
I have two delta pro 3s, and I've considered getting these smart batteries. But at this point I don't know whether to keep investing in the ecoflow ecosystem or start from scratch with a DIY solution. I'd like to be able to add capacity a little at a time without having to sink a couple thousand bucks each time.
I'm right there with you.. Have 15kwh of external batteries to go with my DP3. If they would offer these for around $1000 each it would make much more sense.
Today 02:25 AM
40 Posts
Joined Feb 2008
BullargetToday 02:25 AM
40 Posts
Quote from awer25 :
If that's the case (and you're handy), the DIY solution is much better in my opinion, especially if you need a lot of capacity. Ecoflow is very expensive, but also very convenient.
You are correct. Either you do the work, or you pay someone else to do the work. This is the same for anything: make your own clothes or buy at a store, work on your own car or pay someone else to do it, cook your own food or pay at a restaurant. Nothing new here.

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