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frontpageDavid_David posted Nov 07, 2025 11:46 AM
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Item 1 of 2
frontpageDavid_David posted Nov 07, 2025 11:46 AM

Costco Members: 2-Pack EcoFlow DELTA 3 Series 1024Wh Smart Extra Battery

+ Free Shipping

$620

$720

13% off
Costco Wholesale
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Deal Details
EcoFlow via Costco Next has for Costco Members: 2-Pack EcoFlow DELTA 3 Series 1024Wh Smart Extra Battery on sale for $619.99 when you follow the steps below. Shipping is free.

Thanks to Community Member David_David for sharing this deal.
  • Note: You must click-through the Costco Next page with a active Costco Membership Account in order to get this deal.
Steps:
  1. Go to the Costco Next EcoFlow page.
  2. Ensure you are logged in with your Costco Account via the top-right of the page.
  3. After you are logged in, select the Visit EcoFlow button on the page to proceed to the EcoFlow Costco Next site.
    • Note: This step is required in order for the following page to work.
  4. Go to the 2-Pack EcoFlow DELTA 3 Series 1024Wh Smart Extra Battery page and add to cart.
  5. Your total will be $619.99 with free shipping.
About this Item:
  • Increase the capacity of DELTA 3 Plus/DELTA 3 with two extra 1024Wh *Please note that only one DELTA 3 Series Smart Extra Battery can be connected to the power station at a time.
  • Get 10 years of daily use until it hits 80% of its original capacity. Embrace 3000+ charging cycles enabled by the LFP battery chemistry.
  • Plug-and-play system. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery.
  • With one of the most comprehensive 5-year warranties available, we go the extra mile to give you peace of mind.
  • Compatible with DELTA 2 and DELTA 3 series

Editor's Notes

Written by SaltyOne | Staff
  • At the time of this posting, our research indicates that this is $157.11 lower than the next best comparable online prices starting from $777.10.
  • Rated 5 out of 5 stars from EcoFlow customers.
  • Offer valid for a limited time only / while supplies last.

Original Post

Written by David_David
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
EcoFlow via Costco Next has for Costco Members: 2-Pack EcoFlow DELTA 3 Series 1024Wh Smart Extra Battery on sale for $619.99 when you follow the steps below. Shipping is free.

Thanks to Community Member David_David for sharing this deal.
  • Note: You must click-through the Costco Next page with a active Costco Membership Account in order to get this deal.
Steps:
  1. Go to the Costco Next EcoFlow page.
  2. Ensure you are logged in with your Costco Account via the top-right of the page.
  3. After you are logged in, select the Visit EcoFlow button on the page to proceed to the EcoFlow Costco Next site.
    • Note: This step is required in order for the following page to work.
  4. Go to the 2-Pack EcoFlow DELTA 3 Series 1024Wh Smart Extra Battery page and add to cart.
  5. Your total will be $619.99 with free shipping.
About this Item:
  • Increase the capacity of DELTA 3 Plus/DELTA 3 with two extra 1024Wh *Please note that only one DELTA 3 Series Smart Extra Battery can be connected to the power station at a time.
  • Get 10 years of daily use until it hits 80% of its original capacity. Embrace 3000+ charging cycles enabled by the LFP battery chemistry.
  • Plug-and-play system. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery.
  • With one of the most comprehensive 5-year warranties available, we go the extra mile to give you peace of mind.
  • Compatible with DELTA 2 and DELTA 3 series

Editor's Notes

Written by SaltyOne | Staff
  • At the time of this posting, our research indicates that this is $157.11 lower than the next best comparable online prices starting from $777.10.
  • Rated 5 out of 5 stars from EcoFlow customers.
  • Offer valid for a limited time only / while supplies last.

Original Post

Written by David_David

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12 Comments

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Nov 07, 2025 01:15 PM
4,196 Posts
Joined Mar 2006
cccheelNov 07, 2025 01:15 PM
4,196 Posts
These can't be used with the Delta 3 Ultra, correct?
Nov 07, 2025 01:22 PM
704 Posts
Joined Mar 2016
WickedcarnyNov 07, 2025 01:22 PM
704 Posts
Quote from cccheel :
These can't be used with the Delta 3 Ultra, correct?
Delta 3 ultra doesn't have an expansion port. The Ultra Plus does.
Either way I believe the ultra plus uses the larger pro expansion batteries.
Nov 07, 2025 02:05 PM
110 Posts
Joined Dec 2006
fmoNov 07, 2025 02:05 PM
110 Posts
Essentially the same or a bit worse than the deal for 2x Delta 2 Max batteries on Costco a few weeks ago ($1199 for 2 batteries, 2048 kWh each), different power unit of course
Nov 07, 2025 04:12 PM
1,484 Posts
Joined May 2006
UltraLazerNov 07, 2025 04:12 PM
1,484 Posts
Quote from Wickedcarny :
Delta 3 ultra doesn't have an expansion port. The Ultra Plus does.
Either way I believe the ultra plus uses the larger pro expansion batteries.
Ecoflow naming conventions have gone off the rails. No one knows what product does anything anymore
1
Nov 07, 2025 10:04 PM
10 Posts
Joined Nov 2024
CyanFog2620Nov 07, 2025 10:04 PM
10 Posts
At $320/battery this is a stellar deal, Ecoflow direct has these on their pre-BF sale for $409
Yesterday 01:34 AM
4,304 Posts
Joined Sep 2005
Neo42Yesterday 01:34 AM
4,304 Posts
Decent price for these but wish they could be daisy chained like the delta pro and extra batteries for it. I've got a d3 plus and one of these, it has never crossed my mind to get more extended batteries
Pro
Today 04:04 AM
30,014 Posts
Joined Oct 2010
Medic311
Pro
Today 04:04 AM
30,014 Posts
Quote from UltraLazer :
Ecoflow naming conventions have gone off the rails. No one knows what product does anything anymore
Yep. They know they have a problem. Here is their current list for just Delta 3. It's out of control.

Delta 3 Max
Delta 3 Max Plus
Delta 3 Classic
Delta 3 <<<<----- this one here
Delta 3 1500
Delta 3 Plus
Delta 3 Pro
Delta 3 Ultra
Delta 3 Ultra Plus




That's why a few days ago they sent this email out:




EcoFlow

Hello,

As a clean energy technology brand serving customers worldwide, EcoFlow aims to use this survey to gain deeper insights into how users in different countries and regions perceive product names and positioning — so future naming can maintain high recognition and a clear sense of positioning across diverse languages and cultures.

Whether or not you have purchased an EcoFlow product, we welcome your feedback. Your input will help us refine naming and lineup structure, enabling customers to quickly identify the model that best meets their needs.

The survey takes about 3–5 minutes to complete, and all responses will be used for research purposes only, with strict privacy protection and no sales follow‑up.

👉 Take the Survey

Thank you for your time and valuable insights!

EcoFlow Team

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Original Poster
Pro
Today 04:31 AM
202 Posts
Joined Mar 2025
David_DavidToday 04:31 AM
Original Poster
Pro
202 Posts
[QUOTE=Medic311;180061276]

I can appreciate you want to help people, however there is no Delta 3 Pro.
There is a Delta PRO 3 on the PRO series line (240V capable) not on the 3 series.

And respectfully when you continue to copy and publish this list it only adds further to confusion and mis-information.
Pro
Today 04:44 AM
30,014 Posts
Joined Oct 2010
Medic311
Pro
Today 04:44 AM
30,014 Posts
Quote from David_David :

I can appreciate you want to help people, however there is no Delta 3 Pro.
There is a Delta PRO 3 on the PRO series line (240V capable) not on the 3 series.

And respectfully when you continue to copy and publish this list it only adds further to confusion and mis-information.
Ah yes, "Delta Pro 3".......now that we have straightened that out:


Delta 3 Max
Delta 3 Max Plus
Delta 3 Classic
Delta 3
Delta 3 1500
Delta 3 Plus
Delta 3 Ultra
Delta 3 Ultra Plus
Delta Pro 3

....Oh wait, there's even more Pro:

Delta Pro Ultra
Delta Pro Ultra X


What a massive mess
Original Poster
Pro
Today 04:53 AM
202 Posts
Joined Mar 2025
David_DavidToday 04:53 AM
Original Poster
Pro
202 Posts
Quote from Medic311 :

Ah yes, "Delta Pro 3".......now that we have straightened that out:


Delta 3 Max
Delta 3 Max Plus
Delta 3 Classic
Delta 3
Delta 3 1500
Delta 3 Plus
Delta 3 Ultra
Delta 3 Ultra Plus
Delta Pro 3

....Oh wait, there's even more Pro:

Delta Pro Ultra
Delta Pro Ultra X


What a massive mess
...and I don't even disagree with there being too many names LOL. ordered by capacity could help as well.

3 Series
Delta 3 Classic (1kWh)
Delta 3 (1kWh)
Delta 3 Plus (1kWh)
Delta 3 1500 (1.5kWh)
Delta 3 Max (2kWh)
Delta 3 Max Plus (2kWh)
Delta 3 Ultra (3kWh)
Delta 3 Ultra Plus (3kWh)

Pro series
Delta Pro (3.6kWh)
Delta Pro 3 (4kWh)
Delta Pro Ultra (6-30kWh)
Delta Pro Ultra X (12-60kWh)

...and you're gonna love two more are on the way 😂

Delta 3 1000 Air
Delta 3 2000 Air
Today 07:42 AM
1,129 Posts
Joined Nov 2009
velocirapt0rToday 07:42 AM
1,129 Posts
Only supports the old version not the new classic
Today 09:37 AM
1,259 Posts
Joined Mar 2009
lurewarsToday 09:37 AM
1,259 Posts
And just for the record these also work great with the regular Delta 2. Bought a couple of these recently when they were on sale for around $286 each. But this price isn't too bad if you need two of them

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