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forum threadBraveBook3184 posted Jul 14, 2025 07:07 AM
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forum threadBraveBook3184 posted Jul 14, 2025 07:07 AM

EcoFlow RIVER 3 Plus Extra Battery EB300 - Costco NEXT only $160 $159.99

$160

$209

23% off
EcoFlow
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EcoFlow RIVER 3 Plus Extra Battery EB300 at Costco NEXT
Official price is $209, now only $159.99. This item is compatible with all River 3 series

https://costco.ecoflow.com/produc...tery-eb300
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EcoFlow RIVER 3 Plus Extra Battery EB300 at Costco NEXT
Official price is $209, now only $159.99. This item is compatible with all River 3 series

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

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10 Comments

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Jul 14, 2025 02:14 PM
267 Posts
Joined Oct 2009
Jul 14, 2025 02:14 PM
jillierJul 14, 2025 02:14 PM
267 Posts
Not Authorized
Please return to Costco Next and attempt to transfer again in order to receive your Costco Value pricing
Jul 14, 2025 04:47 PM
161 Posts
Joined May 2012
Jul 14, 2025 04:47 PM
jcricket006Jul 14, 2025 04:47 PM
161 Posts
Quote from jillier :
Not Authorized
Please return to Costco Next and attempt to transfer again in order to receive your Costco Value pricing
You'll need to be logged into Costco next first before the link will work. Open up another tab, login to Costco and then to Costco next. The link will work after that.
Jul 14, 2025 07:04 PM
17 Posts
Joined Nov 2010
Jul 14, 2025 07:04 PM
detoxJul 14, 2025 07:04 PM
17 Posts
Thanks! I grabbed one.
Jul 14, 2025 09:51 PM
2,128 Posts
Joined Jul 2008
Jul 14, 2025 09:51 PM
sandwichJul 14, 2025 09:51 PM
2,128 Posts
I have this for my river 3 and I like that it is pretty slim vs the bigger expansion pack.
Pro
Jul 14, 2025 11:13 PM
929 Posts
Joined Apr 2008
Jul 14, 2025 11:13 PM
vsspam
Pro
Jul 14, 2025 11:13 PM
929 Posts
While this does have a single USB port, the expansion unit ONLY works with the River 3 PLUS (not "all River 3 series").
1
Jul 15, 2025 03:02 AM
383 Posts
Joined Oct 2008
Jul 15, 2025 03:02 AM
corollatercelJul 15, 2025 03:02 AM
383 Posts
I'm seeing 319. Am i seeing the wrong thing?
Jul 15, 2025 03:06 AM
19 Posts
Joined Apr 2014
Jul 15, 2025 03:06 AM
BlazersManiac503Jul 15, 2025 03:06 AM
19 Posts
Quote from corollatercel :
I'm seeing 319. Am i seeing the wrong thing?

I believe it is the EB600 you're looking at for $319.

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Jul 16, 2025 03:21 AM
383 Posts
Joined Oct 2008
Jul 16, 2025 03:21 AM
corollatercelJul 16, 2025 03:21 AM
383 Posts
Quote from BlazersManiac503 :
I believe it is the EB600 you're looking at for $319.

Yes thank you. I see it now.
Jul 17, 2025 04:08 AM
433 Posts
Joined Jun 2007
Jul 17, 2025 04:08 AM
cowdog360Jul 17, 2025 04:08 AM
433 Posts
So if you buy the River 3 plus for $219 and this, you're in $380 for 572wh but it makes the unit 18lbs. You can get a refurb River 2 pro which has 768Wh and weighs the same for less. Granted that's refurb vs new, but these expansion batteries are overpriced even on sale.
1
Today 04:53 AM
3 Posts
Joined Nov 2023
Today 04:53 AM
WgtsheddToday 04:53 AM
3 Posts
Quote from jcricket006 :
You'll need to be logged into Costco next first before the link will work. Open up another tab, login to Costco and then to Costco next. The link will work after that.
Thanks; it worked for me following your suggestion.

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