Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
popularDavid_David posted Nov 24, 2025 01:26 PM
  1. Deal Image
Item 1 of 3
  1. Deal Image
  2. Deal Image
  3. Deal Image
Item 1 of 3
popularDavid_David posted Nov 24, 2025 01:26 PM

EcoFlow RIVER 3 Plus Smart Extra Battery EB300 $97.49 @ Costco Next

$97

$130

25% off
Costco Wholesale
11 Comments 3,382 Views
Get Deal at Retailer
Good Deal
Save
Share
Deal Details
Costco NEXT has Ecoflow River 3 Plus Plug and Play EB300 Extra Battery now down to $97.49

Expand the capacity of the RIVER 3 Plus to 572Wh
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

Good pickup for all those who bought the Costco River 3 Plus Wireless deal to add capacity.

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...tery-eb300
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco NEXT has Ecoflow River 3 Plus Plug and Play EB300 Extra Battery now down to $97.49

Expand the capacity of the RIVER 3 Plus to 572Wh
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

Good pickup for all those who bought the Costco River 3 Plus Wireless deal to add capacity.

Need to be Costco member. Logged into account, and click thru to Ecoflow Costco Next Portal costco.ecoflow.com

https://costco.ecoflow.com/produc...tery-eb300

Community Voting

Deal Score
+14
Good Deal
Get Deal at Retailer

Leave a Comment

Unregistered (You)

11 Comments

Sign up for a Slickdeals account to remove this ad.

Pro
Nov 25, 2025 12:45 AM
143 Posts
Joined Dec 2020
flasholic1234
Pro
Nov 25, 2025 12:45 AM
143 Posts
Does this have the Costco additional year warranty on it as well?
Nov 25, 2025 12:57 AM
6,135 Posts
Joined Feb 2004
armedmetallicaNov 25, 2025 12:57 AM
6,135 Posts
There's no way to get this to work with the eco-flo Delta 2 right?
Nov 25, 2025 06:17 AM
549 Posts
Joined Oct 2004
GoGo98102Nov 25, 2025 06:17 AM
549 Posts
Quote from flasholic1234 :
Does this have the Costco additional year warranty on it as well?
No, Costco Next is not Costco, just using its portal.
1
Nov 25, 2025 06:18 AM
549 Posts
Joined Oct 2004
GoGo98102Nov 25, 2025 06:18 AM
549 Posts
Quote from armedmetallica :
There's no way to get this to work with the eco-flo Delta 2 right?
No, this only works with River 3 with the bottom connector.
Nov 25, 2025 06:36 AM
508 Posts
Joined Oct 2011
blupupherNov 25, 2025 06:36 AM
508 Posts
Quote from GoGo98102 :
No, this only works with River 3 with the bottom connector.
*River 3 Plus.
River 3 is a different product.
Nov 25, 2025 03:17 PM
6,135 Posts
Joined Feb 2004
armedmetallicaNov 25, 2025 03:17 PM
6,135 Posts
Quote from GoGo98102 :
No, this only works with River 3 with the bottom connector.
Thanks
Nov 25, 2025 04:17 PM
110 Posts
Joined Dec 2019
ejwillNov 25, 2025 04:17 PM
110 Posts
the bigger EB600 is $187.49 as well. It will add 572Wh. The EB300 adds 286Wh

Sign up for a Slickdeals account to remove this ad.

Pro
Nov 25, 2025 08:42 PM
47 Posts
Joined Jun 2015
ljhpgh
Pro
Nov 25, 2025 08:42 PM
47 Posts
Looks like the pre-discount price jumped from 130 to 159, so after 25% discount brings it to about $119.
Nov 25, 2025 11:54 PM
199 Posts
Joined Apr 2005
humphhNov 25, 2025 11:54 PM
199 Posts
Quote from ljhpgh :
Looks like the pre-discount price jumped from 130 to 159, so after 25% discount brings it to about $119.
That's pretty sneaky. No bueno.
Nov 28, 2025 04:15 AM
661 Posts
Joined Mar 2017
Damien1772Nov 28, 2025 04:15 AM
661 Posts
Would it be smarter to get the hsn deal for the 3 classic ? It's not much more then the river 3 plus and this extra battery
Nov 28, 2025 09:28 PM
135 Posts
Joined Jan 2011
TwinTurboJoshNov 28, 2025 09:28 PM
135 Posts
Deal dead. Bummer.
1

Leave a Comment

Unregistered (You)

Related Searches

Home & Home ImprovementGardening & OutdoorGeneratorsToolsPower Tool Batteries & ChargersTech & ElectronicsTech Accessories

Popular Deals

See All
Found by StrongMoney163
Yesterday 03:49 PM
$18$5164% offYelomin 49800mAh Power Bank Portable Charger with Built in Cables, 4 Outputs, 3 Inputs $17.79
10
Found by ItsSoCheap
Today 04:22 AM
$12Men's Comfort Wear Blue Knit Blazer (Limited Sizes) $12.27 + Free Shipping
0
Found by neomatrixviper
Yesterday 03:07 PM
$14$2646% offPulp Fiction 4k UHD Blu Ray Digital Code $14.23 Free Shipping Amazon Prime
3
Found by Rokket
Today 04:35 AM
$192$34844% off72.25" Better Homes & Gardens Juliet Arch Cabinet (Green or Light Honey) $192 + Free Shipping
0
Found by hocuspocusblade
Today 05:02 AM
$36$4520% offMcCafe Premium Roast Coffee, Keurig Single Serve K-Cup Pods, Medium Roast, 96 Count~$35.88 With S&S @ Amazon
2

Trending Deals

See All
Found by shivster1796
Yesterday 08:27 PM
$606$1,00039% off2021 Apple M1 Pro MacBook Pro 14" 16GB/512GB SSD - (Space Gray) - Refurbished $606.06 at Tek Deals Store via eBay
8
Found by SickerDealer
Yesterday 07:28 PM
Every 4th footlong free Subway Sub Club
6
Found by deal-hunter420
Today 06:26 AM
$12$7082% off2x Otterbox 30W Premium Pro Fast Charge GaN USB-C Wall Charger $11.99
1
Found by PyrrhicW
Today 02:01 AM
$13$2240% offKTMC Smart Plug 4 Pack for $13.19
6
Found by shivster1796
Today 06:01 AM
$160$35054% offToshiba - 50" Class C350 Series LED 4K UHD Smart Fire TV
4