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frontpageDavid_David posted Aug 5, 2026 12:39 PM

Costco Members: EcoFlow RIVER 3 Plus Smart Extra Battery

$180

$250

28% off
+ Free S&Hat Costco Wholesale
2 Comments
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Deal Details
EcoFlow via Costco Next has for its Members: EcoFlow RIVER 3 Plus Smart Extra Battery (EB600) on sale for $179.99. Shipping is free.

Thanks to community member David_David for sharing this deal

Note: You need to log in to your paid Costco Membership account and then click through to the Ecoflow Costco Next Portal.

Feature:
  • 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 johnny_miller | Staff
  • This price is $76 lower than the previous Frontpage Deal from September 2025.
  • If you don't have a Costco Warehouse Membership, you can sign up here.

Original Post

Written by David_David
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
EcoFlow via Costco Next has for its Members: EcoFlow RIVER 3 Plus Smart Extra Battery (EB600) on sale for $179.99. Shipping is free.

Thanks to community member David_David for sharing this deal

Note: You need to log in to your paid Costco Membership account and then click through to the Ecoflow Costco Next Portal.

Feature:
  • 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 johnny_miller | Staff
  • This price is $76 lower than the previous Frontpage Deal from September 2025.
  • If you don't have a Costco Warehouse Membership, you can sign up here.

Original Post

Written by David_David

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2 Comments

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Aug 6, 2026 9:53 PM
53 Comments
Joined Aug 2013
SeekingDealsLikeYouAug 6, 2026 9:53 PM
53 Comments
Having a built-in 140W USB-C port on the EB600 is a huge win since you can actually use it as a standalone power bank. Most expansion batteries are useless unless they are hooked up to the main station, so being able to charge it or run devices directly is super convenient. For $180, this is a solid upgrade if you already grabbed the River 3 Plus.
Today 10:27 AM
199 Comments
Joined Sep 2018
SeriousDirt9747Today 10:27 AM
199 Comments
Quote from SeekingDealsLikeYou :
Having a built-in 140W USB-C port on the EB600 is a huge win since you can actually use it as a standalone power bank. Most expansion batteries are useless unless they are hooked up to the main station, so being able to charge it or run devices directly is super convenient. For $180, this is a solid upgrade if you already grabbed the River 3 Plus.
Agreed. This is decent but not the best wh/$ when paired with the river 3, but the river 3 has an efficient inverter, a good form factor, and the bidirectional USB on the spare battery was sorely needed. I have several and use them a lot.

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