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frontpageDavid_David posted Sep 01, 2025 01:15 PM
frontpageDavid_David posted Sep 01, 2025 01:15 PM

Costco Members: EcoFlow RIVER 3 Plus Smart Extra Battery (EB600)

+ Free Shipping

$256

$320

20% off
Costco Wholesale
25 Comments 10,708 Views
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Deal Details
EcoFlow via Costco Next has for Costco Members: EcoFlow RIVER 3 Plus Smart Extra Battery (EB600) on sale for $255.99. Shipping is free.

Thanks Community Member David_David for sharing this deal

Note: Need to be Costco member, logged into your account, and click thru to Ecoflow Costco Next Portal

About this Item:
  • Expand the capacity of the RIVER 3 Plus to 858Wh
  • An additional 140W of USB-C input and output option
  • Enjoy a wireless Pogo Pin connection—no cables or screws required
  • Reduce your load by using the Extra Battery independently

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Valid through 9/14, while supplies last.
  • About this Store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here
    • You can view Costco's return policy here.
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

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: EcoFlow RIVER 3 Plus Smart Extra Battery (EB600) on sale for $255.99. Shipping is free.

Thanks Community Member David_David for sharing this deal

Note: Need to be Costco member, logged into your account, and click thru to Ecoflow Costco Next Portal

About this Item:
  • Expand the capacity of the RIVER 3 Plus to 858Wh
  • An additional 140W of USB-C input and output option
  • Enjoy a wireless Pogo Pin connection—no cables or screws required
  • Reduce your load by using the Extra Battery independently

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Valid through 9/14, while supplies last.
  • About this Store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here
    • You can view Costco's return policy here.
  • Additional Notes:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by David_David

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Top Comments

GoGo98102
481 Posts
193 Reputation
Are you comparing temu to Costco, from 7 months ago, AND a pricing mistake?

24 Comments

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Sep 01, 2025 06:12 PM
473 Posts
Joined Jun 2012
MicahJamesNRCALSep 01, 2025 06:12 PM
473 Posts
Awesome price on this
1
Sep 01, 2025 09:15 PM
166 Posts
Joined Mar 2018
PlutomaniaSep 01, 2025 09:15 PM
166 Posts
Still not as low as the TEMU price they had for $178 for the EB600 around Jan 21st. Could have been a pricing mistake, but EcoFlow shipped all three that I ordered. They were brand new and arrived from EcoFlow's warehouse.
7
Sep 01, 2025 11:30 PM
481 Posts
Joined Oct 2004
GoGo98102Sep 01, 2025 11:30 PM
481 Posts
Quote from Plutomania :
Still not as low as the TEMU price they had for $178 for the EB600 around Jan 21st. Could have been a pricing mistake, but EcoFlow shipped all three that I ordered. They were brand new and arrived from EcoFlow's warehouse.
Are you comparing temu to Costco, from 7 months ago, AND a pricing mistake?
2
Sep 02, 2025 02:38 AM
166 Posts
Joined Mar 2018
PlutomaniaSep 02, 2025 02:38 AM
166 Posts

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

Quote from GoGo98102 :
Quote from Plutomania [IMG]http://i.slickdeals.net/images/midnight/misc/backlink.gif[/IMG] :
Still not as low as the TEMU price they had for $178 for the EB600 around Jan 21st. Could have been a pricing mistake, but EcoFlow shipped all three that I ordered. They were brand new and arrived from EcoFlow's warehouse.
Are you comparing temu to Costco, from 7 months ago, AND a pricing mistake?
Costco Next products don't carry Costco's guarantee. Each brand has different terms.
EcoFlow's Temu store is run by EcoFlow and shipped direct from EcoFlow, same as Costco Next.
Pricing mistake 7 months ago, or not, the EB600 a 572Wh battery at $256 is 45 cents a watt hour. High quality generic LiFePO4 batteries are 15 cents a watt hour or less.
2
4
Sep 02, 2025 05:14 AM
2,828 Posts
Joined Dec 2006
NE0tekkSep 02, 2025 05:14 AM
2,828 Posts
Quote from Plutomania :
Costco Next products don't carry Costco's guarantee. Each brand has different terms.
EcoFlow's Temu store is run by EcoFlow and shipped direct from EcoFlow, same as Costco Next.
Pricing mistake 7 months ago, or not, the EB600 a 572Wh battery at $256 is 45 cents a watt hour. High quality generic LiFePO4 batteries are 15 cents a watt hour or less.
I'm new to these small portable battery packs. Would you happen to have any links to the high quality 15 cents per watt hour battery packs? Been seeing so many deals pop up but never sure which ones are high quality and at a good price.
Sep 02, 2025 05:16 AM
166 Posts
Joined Mar 2018
PlutomaniaSep 02, 2025 05:16 AM
166 Posts
Quote from NE0tekk :
Quote from Plutomania [IMG]http://i.slickdeals.net/images/midnight/misc/backlink.gif[/IMG] :
Costco Next products don't carry Costco's guarantee. Each brand has different terms.
EcoFlow's Temu store is run by EcoFlow and shipped direct from EcoFlow, same as Costco Next.
Pricing mistake 7 months ago, or not, the EB600 a 572Wh battery at $256 is 45 cents a watt hour. High quality generic LiFePO4 batteries are 15 cents a watt hour or less.
I'm new to these small portable battery packs. Would you happen to have any links to the high quality 15 cents per watt hour battery packs? Been seeing so many deals pop up but never sure which ones are high quality and at a good price.
I'm referring to batteries, not battery packs. Look at Eco-Worthy's or DC House's (same company) eBay store.
Sep 02, 2025 05:26 AM
296 Posts
Joined Dec 2021
AwsiDoogerSep 02, 2025 05:26 AM
296 Posts
Quote from Plutomania :
Still not as low as the TEMU price they had for $178 for the EB600 around Jan 21st. Could have been a pricing mistake, but EcoFlow shipped all three that I ordered. They were brand new and arrived from EcoFlow's warehouse.
Agreed. I bought one EB600 during the Temu deal but have kicked myself for not buying three. I actually got it lower than $177 because I was a first time customer and was able to apply a bundle coupon. It ended up being something ridiculous like River 3 Plus and EB600 for below $300 including tax.

That experience caused me to continue to check Temu for EcoFlow deals. I noticed the pricing fluctuated all over the place but were especially low during wee hours Eastern time, which is perfect for me because I'm always awake at that time. In mid March I grabbed River 3 Plus and EB300 for $254 total, including tax.

Given those Temu experiences I want another EB600 but even a price like this is not tempting.
1

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Sep 02, 2025 05:58 AM
2 Posts
Joined Dec 2015
wahren_pascuaSep 02, 2025 05:58 AM
2 Posts
ecoflow 2 at home depot $399
2
Sep 02, 2025 06:00 AM
735 Posts
Joined May 2009
covertfantomSep 02, 2025 06:00 AM
735 Posts
Quote from Plutomania :
Quote from NE0tekk [IMG]https://slickdeals.net/images/misc/backlink.gif[/IMG] :
Quote from Plutomania [IMG]http://i.slickdeals.net/images/midnight/misc/backlink.gif[/IMG] :
Costco Next products don't carry Costco's guarantee. Each brand has different terms.
EcoFlow's Temu store is run by EcoFlow and shipped direct from EcoFlow, same as Costco Next.
Pricing mistake 7 months ago, or not, the EB600 a 572Wh battery at $256 is 45 cents a watt hour. High quality generic LiFePO4 batteries are 15 cents a watt hour or less.
I'm new to these small portable battery packs. Would you happen to have any links to the high quality 15 cents per watt hour battery packs? Been seeing so many deals pop up but never sure which ones are high quality and at a good price.
I'm referring to batteries, not battery packs. Look at Eco-Worthy's or DC House's (same company) eBay store.
Just to bolt on to this, this isn't a real great option if you want portability. If you're using it as a UPS though, you'll get way better bang for the buck this way.
Sep 03, 2025 12:43 PM
66 Posts
Joined Dec 2007
adook27Sep 03, 2025 12:43 PM
66 Posts
Yea I mean why wouldn't you just get the larger capacity one, like the anker solix that was just on sale ...gonna carry two of these around??
Original Poster
Pro
Sep 03, 2025 01:26 PM
117 Posts
Joined Mar 2025
David_DavidSep 03, 2025 01:26 PM
Original Poster
Pro
117 Posts
Quote from adook27 :
Yea I mean why wouldn't you just get the larger capacity one, like the anker solix that was just on sale ...gonna carry two of these around??
this is for the thousands of people who have already purchased River 3 Plus or River 3 Plus Wireless (costco deal probsably ten thousand+ - 1 pallet per costco store location USA nation wide AND online) for those that are already "pot commited" to the main unit, this is the plug and play additional storage capacity/runtime.
Sep 03, 2025 01:35 PM
35 Posts
Joined Aug 2005
makruggsSep 03, 2025 01:35 PM
35 Posts
Just Got one, best price thus far
Sep 03, 2025 02:49 PM
717 Posts
Joined Nov 2015
speedy777Sep 03, 2025 02:49 PM
717 Posts
This is not good price. I've seen this in store $220 few weeks ago. It is nice for charging phone, but not enough wattage for other appliances during an emergency. We need new battery technology that around 2000W and similar in size.
3
Sep 03, 2025 03:30 PM
50 Posts
Joined Mar 2005
klingsorSep 03, 2025 03:30 PM
50 Posts
These have been $200 in the warehouse lately
3

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Sep 03, 2025 03:33 PM
5,804 Posts
Joined Dec 2004
CaleoSep 03, 2025 03:33 PM
5,804 Posts
Quote from klingsor :
These have been $200 in the warehouse lately
I don't think they have these Extra Battery units in the warehouse. Not at mine, anyway.

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