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David_David 20.1K Views
Sep 1, 2025 1:15 PM

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

$256

$320

20% off
+ Free Shippingat Costco Wholesale
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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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26 Comments

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Sep 1, 2025 6:12 PM
474 Comments
Joined Jun 2012
MicahJamesNRCALSep 1, 2025 6:12 PM
474 Comments
Awesome price on this
1
Sep 1, 2025 9:15 PM
197 Comments
Joined Mar 2018
PlutomaniaSep 1, 2025 9:15 PM
197 Comments
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.
8
Sep 1, 2025 11:30 PM
631 Comments
Joined Oct 2004
GoGo98102Sep 1, 2025 11:30 PM
631 Comments
Quote from Plutomania View quoted comment :
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 2, 2025 2:38 AM
197 Comments
Joined Mar 2018
PlutomaniaSep 2, 2025 2:38 AM
197 Comments

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

Quote from GoGo98102 View quoted comment :
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?
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 2, 2025 5:14 AM
2.9K Comments
Joined Dec 2006
NE0tekkSep 2, 2025 5:14 AM
2.9K Comments
Quote from Plutomania View quoted comment :
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.
1
Sep 2, 2025 5:16 AM
197 Comments
Joined Mar 2018
PlutomaniaSep 2, 2025 5:16 AM
197 Comments
Quote from NE0tekk View quoted comment :
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.
I'm referring to batteries, not battery packs. Look at Eco-Worthy's or DC House's (same company) eBay store.
Sep 2, 2025 5:26 AM
333 Comments
Joined Dec 2021
AwsiDoogerSep 2, 2025 5:26 AM
333 Comments
Quote from Plutomania View quoted comment :
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.
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Sep 2, 2025 5:58 AM
2 Comments
Joined Dec 2015
wahren_pascuaSep 2, 2025 5:58 AM
2 Comments
ecoflow 2 at home depot $399
2
Sep 2, 2025 6:00 AM
746 Comments
Joined May 2009
covertfantomSep 2, 2025 6:00 AM
746 Comments
Quote from Plutomania View quoted comment :
Quote from NE0tekk :
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.
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 3, 2025 12:43 PM
89 Comments
Joined Dec 2007
adook27Sep 3, 2025 12:43 PM
89 Comments
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 3, 2025 1:26 PM
352 Comments
Joined Mar 2025
David_DavidSep 3, 2025 1:26 PM
Original Poster
Pro
352 Comments
Quote from adook27 View quoted comment :
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 3, 2025 1:35 PM
80 Comments
Joined Aug 2005
makruggsSep 3, 2025 1:35 PM
80 Comments
Just Got one, best price thus far
Sep 3, 2025 2:49 PM
881 Comments
Joined Nov 2015
speedy777Sep 3, 2025 2:49 PM
881 Comments
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.
4
Sep 3, 2025 3:30 PM
51 Comments
Joined Mar 2005
klingsorSep 3, 2025 3:30 PM
51 Comments
These have been $200 in the warehouse lately
3

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Sep 3, 2025 3:33 PM
6.9K Comments
Joined Dec 2004
CaleoSep 3, 2025 3:33 PM
6.9K Comments
Quote from klingsor View quoted comment :
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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