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expiredpricesniper posted Jul 14, 2026 6:52 PM

Costco Members: EcoFlow Delta 3 Plus 1024Wh/1800W Portable Power Station

$420

$520

19% off
+ Free S&Hat Costco Wholesale
50 Comments
23.4K Views
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Deal Details
Costco Wholesale has EcoFlow Delta 3 Plus 1024Wh/1800W Portable Power Generator Station (EFDELTA3P-US-Cbox) on sale for $419.99 valid for Costco Members only. Shipping is free.

Thanks to community member pricesniper for finding this deal

Note, must login to Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $100 lower (19.23% savings); originally listed for $519.99 (next best price ranges around ~$649)
  • About the Deal
    • The EcoFlow Delta 3 Series features 1024Wh capacity/1800W output/IP65 BMS reliable backup & supports 99% of household devices; perfect for home backup, RV and outdoor usage
    • Arrives approximately 5-7 business days from time of order
    • Offer valid through July 20, 2026 or while promotional price/supplies last
  • Additional Details
    • Product is eligible for return to any of the 800+ Costco Warehouses worldwide

Original Post

Written by pricesniper
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has EcoFlow Delta 3 Plus 1024Wh/1800W Portable Power Generator Station (EFDELTA3P-US-Cbox) on sale for $419.99 valid for Costco Members only. Shipping is free.

Thanks to community member pricesniper for finding this deal

Note, must login to Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $100 lower (19.23% savings); originally listed for $519.99 (next best price ranges around ~$649)
  • About the Deal
    • The EcoFlow Delta 3 Series features 1024Wh capacity/1800W output/IP65 BMS reliable backup & supports 99% of household devices; perfect for home backup, RV and outdoor usage
    • Arrives approximately 5-7 business days from time of order
    • Offer valid through July 20, 2026 or while promotional price/supplies last
  • Additional Details
    • Product is eligible for return to any of the 800+ Costco Warehouses worldwide

Original Post

Written by pricesniper

Community Voting

Deal Score
+64
Good Deal
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Top Comments

opq
355Comments
41Reputation
It's getting harder to pick this over the Anker S2000 at $599 (at 30c/kwh) which is almost 2x the capacity, for marginally more weight, has 50% more cycles to 80%, and has much much lower AC and idle power draw - it was a big deal when this first came out and IIRC they were able to half it, but it's still almost 3x the draw of the S2000. If you really need the slightly larger inverter this has, or if you have lots of Ecoflow products then this makes sense. Oh and this is sold by Costco so hopefully their generous return policy isn't ever needed but if it is, that's worth something. Otherwise, even at 41.9c/kWh the price of this Delta 3 Plus is clearly being cut to try and sell as many of their remaining stock as they can.
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50 Comments

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Jul 14, 2026 7:36 PM
69 Comments
Joined Aug 2016
Hawkeye3636Jul 14, 2026 7:36 PM
69 Comments
How would I figure out if this could power a large fridge?
Jul 14, 2026 7:39 PM
25 Comments
Joined Apr 2019
UniquePicture5159Jul 14, 2026 7:39 PM
25 Comments
Quote from Hawkeye3636 :
How would I figure out if this could power a large fridge?
Look at what the wattage your fridge needs to start up and run. I've very sure it would looking at the wattage and once the fridge is going they really don't use much energy
Jul 14, 2026 7:42 PM
447 Comments
Joined Dec 2007
PumpkinatorJul 14, 2026 7:42 PM
447 Comments
Quote from Hawkeye3636 :
How would I figure out if this could power a large fridge?
This unit will power your big refrigerator (unless it's 220v), but not sure for how long. The best way to determine how long it will power your refrigerator is to install a "Kill-A-Watt" meter between the refrigerator plug and the wall outlet and see how many watts it consumes when running and divide by 1,000. This will help determine if this power station is adequate for your needs, or if you need a larger power station.
1
Jul 14, 2026 8:08 PM
124 Comments
Joined Feb 2011
teejnutJul 14, 2026 8:08 PM
124 Comments
Was considering buying this and then pairing with a 48v server rack battery. Saw this post on Reddit about updated FW blocking it now. Anyone else have this experience?

https://www.reddit.com/r/Ecoflow_...are_button
1
Jul 14, 2026 8:14 PM
140 Comments
Joined Oct 2010
joeyv821Jul 14, 2026 8:14 PM
140 Comments
Quote from teejnut :
Was considering buying this and then pairing with a 48v server rack battery. Saw this post on Reddit about updated FW blocking it now. Anyone else have this experience?

https://www.reddit.com/r/Ecoflow_...are_button
I planned to do the same with a different EcoFlow power station however the time it takes to switch as a backup power was too slow (although still in the milliseconds range) compared to a traditional battery backup.
Jul 14, 2026 8:37 PM
18 Comments
Joined Aug 2025
SociableKitten193Jul 14, 2026 8:37 PM
18 Comments
I have 2 of these they have bailed me out numerous times here in Texas with all the storms. Yesterday we didn't have power for 12 hours,I have one in office connected to the essentials..internet network,laptop,security cameras,tv,lamp they whole room doesn't skip a beat. 2nd on powers the Samsung fridge no problem. 12 hours without power only had to charge them up once. So I got about 6-7hrs out of them. I pull my big Dual fuel Westinghouse 6k generator out and charged at 1500 watts takes about 45min. It got hot so I left generator on for portable a/c to have a cool office. They save me every time !!!
Original Poster
Pro
Jul 14, 2026 9:31 PM
549 Comments
Joined Jan 2015
pricesniperJul 14, 2026 9:31 PM
Original Poster
Pro
549 Comments
Quote from SociableKitten193 :
I have 2 of these they have bailed me out numerous times here in Texas with all the storms. Yesterday we didn't have power for 12 hours,I have one in office connected to the essentials..internet network,laptop,security cameras,tv,lamp they whole room doesn't skip a beat. 2nd on powers the Samsung fridge no problem. 12 hours without power only had to charge them up once. So I got about 6-7hrs out of them. I pull my big Dual fuel Westinghouse 6k generator out and charged at 1500 watts takes about 45min. It got hot so I left generator on for portable a/c to have a cool office. They save me every time !!!
What portable A/C do you recommend using with these? I've heard of using 12V ones designed for RvS.

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Jul 14, 2026 9:39 PM
18 Comments
Joined Aug 2025
SociableKitten193Jul 14, 2026 9:39 PM
18 Comments
Quote from pricesniper :
What portable A/C do you recommend using with these? I've heard of using 12V ones designed for RvS.
I've never used one on Ecoflow I'm thinking it pulls too much wattage. I have a roll around LG from HD that I run 8-10 hours on my big generator. Just use the Ecoflows for home office and fridge. It pulls major wattage on coffee maker and air fryer,so don't even want to risk truing to run a A/C unit
Jul 15, 2026 2:59 AM
468 Comments
Joined Nov 2019
MaroonPocket778Jul 15, 2026 2:59 AM
468 Comments
Quote from teejnut :
Was considering buying this and then pairing with a 48v server rack battery. Saw this post on Reddit about updated FW blocking it now. Anyone else have this experience?https://www.reddit.com/r/Ecoflow_...are_button
I set mine up 3 weeks ago. Drew 1kw window ac for 3 hours before I had to cancel test
Jul 15, 2026 3:12 AM
355 Comments
Joined Oct 2011
opqJul 15, 2026 3:12 AM
355 Comments

Our community has rated this post as helpful. If you agree, why not thank opq

It's getting harder to pick this over the Anker S2000 at $599 (at 30c/kwh) which is almost 2x the capacity, for marginally more weight, has 50% more cycles to 80%, and has much much lower AC and idle power draw - it was a big deal when this first came out and IIRC they were able to half it, but it's still almost 3x the draw of the S2000. If you really need the slightly larger inverter this has, or if you have lots of Ecoflow products then this makes sense. Oh and this is sold by Costco so hopefully their generous return policy isn't ever needed but if it is, that's worth something. Otherwise, even at 41.9c/kWh the price of this Delta 3 Plus is clearly being cut to try and sell as many of their remaining stock as they can.
3
Jul 15, 2026 3:16 AM
45 Comments
Joined Oct 2024
Dream1981Jul 15, 2026 3:16 AM
45 Comments
Probably what the price should actually be for this but I think they are clearing this one out, just not a lot of room for it in the market and in their clunky delta line up.
1
Jul 15, 2026 3:26 AM
127 Comments
Joined May 2013
pj_rageJul 15, 2026 3:26 AM
127 Comments
Thinking of grabbing one to plug my main sump pump into full time so I have some coverage when power goes out. Seems like it should both handle the load and provide decent runtime depending on how much it's really running. Anything I'm missing vs going with a more traditional deep cycle marine battery backup approach? This seems smaller lighter and more self contained. Being able to monitor the ecoflow remotely is also a benefit over a lot of the battery backup solutions.
1
Jul 15, 2026 4:40 AM
73 Comments
Joined Nov 2013
apcksJul 15, 2026 4:40 AM
73 Comments
check the specs
3
Jul 15, 2026 6:59 PM
2.8K Comments
Joined Jan 2009
glass_tikiJul 15, 2026 6:59 PM
2.8K Comments
Would returning the anker solix bundle from the previous deal make sense? It would come out a little cheaper (https://slickdeals.net/f/19605159-costco-anker-solix-c2000x-gen-2-2400w-portable-power-station-400w-solar-panel-800-free-s-h?v=1&src=SiteSearch)

I'm new to power banks. I do have one 195W solar panel already

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Jul 17, 2026 7:06 AM
25 Comments
Joined Mar 2023
rsarava1314Jul 17, 2026 7:06 AM
25 Comments
Thanks

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