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David_David 14.8K Views
Dec 22, 2025 11:48 AM

Costco Members: EcoFlow River 3 Plus Wireless Boost Combo

$200

$280

28% off
+ Free Shippingat Costco Wholesale
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Deal Details
Costco Wholesale has for their Members: EcoFlow River 3 Plus Wireless Boost Combo (EFR3PLUS-W+RP5KPIN-US-CBOX) on sale for $199.99. Shipping is free.

Thanks to Community Member David_David for sharing this deal.

About this Item:
  • 286Wh Capacity for Outdoor Recreation, Daily Backup, Home Office & Gaming
  • 2pcs 5000mAh RAPID Magnetic Power Banks Enjoy a Swap and Share Fast Charging
  • EcoFlow River 3 Plus Wireless: 600W Rated Output, Surge 1200W AC Output
  • EcoFlow River 3 Plus Wireless: <10 ms Pro-grade UPS, 1-hr Fast Charging
  • Power Bank: 15W Wireless Charging, 30W Cable Charging, 0% to 70% in 33-min

Editor's Notes

Written by powerfuldoppler | Staff
  • Rated 4.5 out of 5 stars from customer reviews.
  • This price matches the previous Frontpage Deal.
  • Valid 12/22/25 through 01/07/26. While supplies last.
  • 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
Costco Wholesale has for their Members: EcoFlow River 3 Plus Wireless Boost Combo (EFR3PLUS-W+RP5KPIN-US-CBOX) on sale for $199.99. Shipping is free.

Thanks to Community Member David_David for sharing this deal.

About this Item:
  • 286Wh Capacity for Outdoor Recreation, Daily Backup, Home Office & Gaming
  • 2pcs 5000mAh RAPID Magnetic Power Banks Enjoy a Swap and Share Fast Charging
  • EcoFlow River 3 Plus Wireless: 600W Rated Output, Surge 1200W AC Output
  • EcoFlow River 3 Plus Wireless: <10 ms Pro-grade UPS, 1-hr Fast Charging
  • Power Bank: 15W Wireless Charging, 30W Cable Charging, 0% to 70% in 33-min

Editor's Notes

Written by powerfuldoppler | Staff
  • Rated 4.5 out of 5 stars from customer reviews.
  • This price matches the previous Frontpage Deal.
  • Valid 12/22/25 through 01/07/26. While supplies last.
  • If you don't have a Costco Warehouse Membership, you can sign-up here

Original Post

Written by David_David

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Community Reviews

EcoFlow River 3 Plus stands out as a compact backup power station for outages, outdoor setups, and light remote work. It has powered a projector by the pool, kept a cable modem and router online during outages, and handled camera and networking gear for live streaming. The built in UPS and detachable battery setup add flexibility, and the $200 price drew strong interest. The main cautions are UPS behavior, since firmware updates can cut output and some loads may not switch over cleanly, plus the magnetic charger battery is only so so. A handy pick if you want portable power with extra versatility.

  • The River 3 Plus can power a movie projector outdoors when extension cords are inconvenient.

    Jackswift150

  • The built-in UPS can keep a cable modem or router online during power outages.

    HilariousString9069

  • The unit can support live streaming at soccer fields while running camera and networking gear.

    NervousFaucet8351

  • A $200 price adjustment can make the EcoFlow River 3 Plus more attractive for laptop and hotspot power setups.

    arooni

  • Using the River 3 Plus as a UPS requires disabling auto-updates because updates can de-energize outputs.

    hyanar

  • UPS transition performance can be slow for some loads, with over one-second cutover occurring intermittently for a mini PC.

    opq

  • Firmware updates may cut power during updating, so a second UPS may be needed or the unit may need to stay offline.

    WalterBlue

  • UPS use can be inconvenient because preventing calibration drift may require full 0% to 100% charge and discharge cycles every three months.

    TidalWaveOne

Common Questions (4)

AI-generated summary based on comments from the community. Updated ago

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22 Comments

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Dec 22, 2025 10:18 PM
352 Comments
Joined Jan 2011
Jackswift150Dec 22, 2025 10:18 PM
352 Comments
I dont have the plus, but I have the River 3 and love that little guy. We had a power outage this week, was able to get the wife and kids dressed while still dark out. We have used this to power a movie projector by the pool where extension cords are a pain. Very flexible device, i may even upgrade to this higher wattage variant.
Dec 22, 2025 11:47 PM
1.4K Comments
Joined Jul 2015
arooniDec 22, 2025 11:47 PM
1.4K Comments
thanks had bought this earlier at a higher price and got a price adjustment today. love the unit, and I love it even more @ $200.

pairs well with a 220W ecoflow panel I bought refurbished on eBay for essentially unlimited laptop + hotspot power for hammock remote workdays. I need to do more of those Smilie
1
Dec 23, 2025 2:13 AM
64 Comments
Joined Feb 2020
HilariousString9069Dec 23, 2025 2:13 AM
64 Comments
Built in UPS. When not in use for other duties, plug your cable modem / router into this device and never lose your internet during power outages. Get 2 or 3 and use the other ones as battery backup for your security cameras in case you're away from home and lose power. These things rock.
1
Dec 23, 2025 5:45 AM
1 Comments
Joined Jul 2017
hyanarDec 23, 2025 5:45 AM
1 Comments

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

I have three of these. They are awesome. Turn off auto-updates if you use them as a UPS though. Updates will de-energize outputs.
3
Pro
Dec 23, 2025 3:32 PM
13.9K Comments
Joined Apr 2005
TidalWaveOne
Pro
Dec 23, 2025 3:32 PM
13.9K Comments
Quote from HilariousString9069 View quoted comment :
Built in UPS. When not in use for other duties, plug your cable modem / router into this device and never lose your internet during power outages. Get 2 or 3 and use the other ones as battery backup for your security cameras in case you're away from home and lose power. These things rock.
They are not that great for UPS's. I thought they were at first, but there are significant downsides, including a recommendation to prevent calibration drift by performing a full 0% to 100% charge and discharge cycle every 3 months, which is a pain in the ass.

More:
https://www.reddit.com/r/Ecoflow_...lus_delta/
2
4
Dec 23, 2025 3:46 PM
277 Comments
Joined Mar 2010
BMWBig6Dec 23, 2025 3:46 PM
277 Comments
Is this only available online? I checked every local store within 200 miles and it says "Item Not Sold at this Warehouse." Estimated delivery says Jan 5.
Last edited by BMWBig6 December 23, 2025 at 08:17 AM.
Dec 23, 2025 4:54 PM
397 Comments
Joined Sep 2013
RikBDec 23, 2025 4:54 PM
397 Comments
Quote from BMWBig6 View quoted comment :
Is this only available online? I checked every local store within 200 miles and it says "Item Not Sold at this Warehouse." Estimated delivery says Jan 5.
It used to be but my local warehouses phased it out around June and switched to carrying the Anker Solix instead. I would be surprised if any warehouses still had any.
1

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Dec 23, 2025 4:59 PM
359 Comments
Joined Oct 2011
opqDec 23, 2025 4:59 PM
359 Comments
If you use this as a UPS, test the transition several times to make sure it actually works for your load. We have a mini PC (well under 600W) that when connected to the River 3 Plus we got from Costco (the updated one manufactured later this year), the actual transition time was over 1 second (definitely not 10ms) one out of every 3 or so times. Apparently compared to traditional UPSes these really struggle with some inductive loads. Like PC power supplies.
Last edited by opq December 23, 2025 at 09:02 AM.
1
1
Dec 23, 2025 5:16 PM
2 Comments
Joined Nov 2017
WalterBlueDec 23, 2025 5:16 PM
2 Comments
Quote from HilariousString9069 View quoted comment :
Built in UPS. When not in use for other duties, plug your cable modem / router into this device and never lose your internet during power outages. Get 2 or 3 and use the other ones as battery backup for your security cameras in case you're away from home and lose power. These things rock.
The problem is they can cut power while updating the firmware which needs internet, so you also need a second UPS if you're going to do that or keep them offline.
1
Dec 23, 2025 5:18 PM
359 Comments
Joined Oct 2011
opqDec 23, 2025 5:18 PM
359 Comments
Quote from WalterBlue View quoted comment :
The problem is they can cut power while updating the firmware which needs internet, so you also need a second UPS if you're going to do that or keep them offline.
This is at least controllable (you can disable fw updates), it's not like conventional UPSes get FW updates often anyways, at least not cheaper ones.
1
Dec 23, 2025 5:32 PM
277 Comments
Joined Mar 2010
BMWBig6Dec 23, 2025 5:32 PM
277 Comments
Quote from RikB View quoted comment :
It used to be but my local warehouses phased it out around June and switched to carrying the Anker Solix instead. I would be surprised if any warehouses still had any.
Thank you for sharing this data point. I've seen a lot of Anker lately too.
Dec 23, 2025 6:32 PM
240 Comments
Joined Jan 2009
funnymanDec 23, 2025 6:32 PM
240 Comments
Here is something $100 more, JACKERY Explorer 600 V2, for double the storage, faster UPS and include solar panel but of course more than twice the weight and no detachable power banks……Any thoughts??

https://www.costco.com/p/-/jacker...ue&nf=true
2
Dec 23, 2025 9:32 PM
9 Comments
Joined Oct 2025
NervousFaucet8351Dec 23, 2025 9:32 PM
9 Comments
I have two of these. The mag chargers battery is mediocre but the big battery is solid. I use it all the time while running camera and networking gear at soccer fields for live streaming.
Dec 24, 2025 2:19 AM
456 Comments
Joined Feb 2008
whoa29kDec 24, 2025 2:19 AM
456 Comments
Wouldn't the new Ecoflow Delta 1000 Air be a better option for $100 more?

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Dec 24, 2025 2:54 AM
91 Comments
Joined Jan 2016
LessOftenDec 24, 2025 2:54 AM
91 Comments
Quote from WalterBlue View quoted comment :
The problem is they can cut power while updating the firmware which needs internet, so you also need a second UPS if you're going to do that or keep them offline.
I've had mine in my offices's server rack for over a year and haven't had this happen yet (knock on wood)

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