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frontpageDavid_David posted Oct 01, 2025 12:29 PM
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frontpageDavid_David posted Oct 01, 2025 12:29 PM

Costco Members: 2-Pack EcoFlow Delta 2 Max Smart Extra Battery (LFP)

+ Free S/H

$1,190

$1,900

37% off
Costco Wholesale
25 Comments 10,248 Views
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Deal Details
Ecoflow via Costco Wholesale Next has 2-Pack EcoFlow Delta 2 Max Smart Extra Battery (LFP) on sale for $1189.99 valid for Costco Members only. Shipping is free.

Thanks to community member David_David for finding this deal

Note, must login to your Costco account to be redirected to their Costco Wholesale Next portal

About the Product
  • Increase Capacity of Delta Max/Delta Max 2 w/ an Extra 4096Wh
  • 3000+ Charging Cycles Enabled by LFP Battery
  • Plug/Play without Setup
Warranty
  • Includes a 5-year manufacturer warranty w/ purchase

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product offers a reduced price $710 Off lower (37.37% savings), normally listed for $1899.99. This comes out to roughly $594.99/smart battery
  • About the Deal
    • Offer valid while promotional price/supplies last
    • Please see original post/WIKI for additional details (if applicable) or check the forum comments for helpful insights/discussion
  • Additional Details

Original Post

Written by David_David
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Ecoflow via Costco Wholesale Next has 2-Pack EcoFlow Delta 2 Max Smart Extra Battery (LFP) on sale for $1189.99 valid for Costco Members only. Shipping is free.

Thanks to community member David_David for finding this deal

Note, must login to your Costco account to be redirected to their Costco Wholesale Next portal

About the Product
  • Increase Capacity of Delta Max/Delta Max 2 w/ an Extra 4096Wh
  • 3000+ Charging Cycles Enabled by LFP Battery
  • Plug/Play without Setup
Warranty
  • Includes a 5-year manufacturer warranty w/ purchase

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product offers a reduced price $710 Off lower (37.37% savings), normally listed for $1899.99. This comes out to roughly $594.99/smart battery
  • About the Deal
    • Offer valid while promotional price/supplies last
    • Please see original post/WIKI for additional details (if applicable) or check the forum comments for helpful insights/discussion
  • Additional Details

Original Post

Written by David_David

Community Voting

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24 Comments

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Oct 01, 2025 05:00 PM
78 Posts
Joined Jul 2022
HonestClub8947Oct 01, 2025 05:00 PM
78 Posts
Very good price $600 each!
Oct 02, 2025 11:25 AM
2,621 Posts
Joined May 2006
tivoboyOct 02, 2025 11:25 AM
2,621 Posts
Pretty decent price. This usually only happens with a combo deal. Main power station plus battery or battery alone. These will also work with the newly release delta 3 max models with an adaptor
Oct 02, 2025 01:22 PM
556 Posts
Joined May 2008
FlameOutOct 02, 2025 01:22 PM
556 Posts
this is almost too hard to pass up. Since I used my previous purchase of two D2M's, extra battery and solar equipment for my energy credit last year. can this be also used this year? I don't know if just batteries can be used that way
Oct 02, 2025 03:15 PM
2,621 Posts
Joined May 2006
tivoboyOct 02, 2025 03:15 PM
2,621 Posts
One can claim the credit every year, just needs to be >3kw in capacity
Oct 02, 2025 07:25 PM
33 Posts
Joined Oct 2020
PowerfulDolphin440Oct 02, 2025 07:25 PM
33 Posts
Quote from FlameOut :
this is almost too hard to pass up. Since I used my previous purchase of two D2M's, extra battery and solar equipment for my energy credit last year. can this be also used this year? I don't know if just batteries can be used that way
I had to pull the trigger I even joined Costco to do it , you can buy 1 on ecoflow for 750 for a while but I figured just finish it up with two.
Oct 02, 2025 07:26 PM
33 Posts
Joined Oct 2020
PowerfulDolphin440Oct 02, 2025 07:26 PM
33 Posts
oh I didn't know that thanks.
Oct 02, 2025 08:53 PM
795 Posts
Joined Nov 2005
myculitoOct 02, 2025 08:53 PM
795 Posts
How do we claim the >3 KWH credit you guys are referring to?

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Oct 03, 2025 01:16 PM
46 Posts
Joined Nov 2010
grayskunkOct 03, 2025 01:16 PM
46 Posts
Quote from FlameOut :
this is almost too hard to pass up. Since I used my previous purchase of two D2M's, extra battery and solar equipment for my energy credit last year. can this be also used this year? I don't know if just batteries can be used that way
You can. As long as they are "in service".
Oct 03, 2025 02:45 PM
29,957 Posts
Joined Oct 2010
Medic311Oct 03, 2025 02:45 PM
29,957 Posts
Can these be plugged into the Delta Pro or on the Max?
Oct 03, 2025 03:14 PM
19 Posts
Joined Jul 2007
lambhkOct 03, 2025 03:14 PM
19 Posts
Are these the ones I can wire into my house somehow for power outages? Anyone done that?
1
Oct 03, 2025 04:18 PM
19 Posts
Joined Sep 2024
FeistyVest2189Oct 03, 2025 04:18 PM
19 Posts
Quote from FlameOut :
this is almost too hard to pass up. Since I used my previous purchase of two D2M's, extra battery and solar equipment for my energy credit last year. can this be also used this year? I don't know if just batteries can be used that way
My understanding: you can easily charge ecoflow off a separate off-brand battery, but
  1. you need the right cable and
  2. you will have to charge the battery separately (need a charge controller or batt w/ one)
  3. however, you can get 5000wh for about 800 w a bit of patience
That's how ecoflow gets you: cheap "generators" with expensive add on batts (this is a nice deal though; certainly it's lovely to charge everything w/o moving cords around or having a separate charge controller.)
Oct 03, 2025 08:25 PM
107 Posts
Joined May 2019
salami90210Oct 03, 2025 08:25 PM
107 Posts
would there be a graceful way to use these 2 extra batteries with an existing Delta 2 with smaller extra battery setup? Simple google searches say no because you can only connect one extra battery at a time but I wonder if you can just run a Delta 2 with extra battery until they are both drained and then plug in a fresh extra battery and keep going. I havent been able to find anyone talking about this kind of usage, maybe because its ridiculous
Oct 03, 2025 11:48 PM
89 Posts
Joined Dec 2010
mikemjrOct 03, 2025 11:48 PM
89 Posts
Quote from FeistyVest2189 :
My understanding: you can easily charge ecoflow off a separate off-brand battery, but
  1. you need the right cable and
  2. you will have to charge the battery separately (need a charge controller or batt w/ one)
  3. however, you can get 5000wh for about 800 w a bit of patience
That's how ecoflow gets you: cheap "generators" with expensive add on batts (this is a nice deal though; certainly it's lovely to charge everything w/o moving cords around or having a separate charge controller.)
I wish I could find detailed instructions how to use these with my bluetti AC200p
Oct 04, 2025 06:34 PM
126 Posts
Joined Apr 2011
bruinloveOct 04, 2025 06:34 PM
126 Posts
Quote from Medic311 :
Can these be plugged into the Delta Pro or on the Max?
No, you can not.

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Oct 05, 2025 01:27 PM
2,621 Posts
Joined May 2006
tivoboyOct 05, 2025 01:27 PM
2,621 Posts
These are great batteries and they work across several units including the newly announce Delta 3 max line - with an adaptor.. they usually provide ~ 88% of energy store which is good. I'd just love them to be overall with any discount ~ .40$ per watt vs. .55$. It's a small difference but while they should command a bit of a premium, 30% isn't realistic in today's environment. Also, what would make this type of battery TRULY great would be the ability to at least charge them via solar - dc in. They be great to have as secondly kw storage but able to put out in the sun during the day while the power station does its work. Why isn't that easier to do? Allow solar dc in?

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