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frontpagecurro posted May 16, 2026 09:33 PM
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frontpagecurro posted May 16, 2026 09:33 PM

Costco Members: EcoFlow River 3 Plus 286Wh Wireless Boost Combo

+ Free S&H

$200

$280

28% off
Costco Wholesale
44 Comments 19,991 Views
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Deal Details
Costco Wholesale has for their Members: EcoFlow River 3 Plus 286Wh Wireless Boost Combo (EFR3PLUS-W+RP5KPIN-US-CBOX) on sale for $199.99. Shipping is free.

Thanks to Community Member curro 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 Neo45 | Staff
  • This price matches our March '26 Frontpage Deal.
  • Rated 4.4 out of 5 stars from customer reviews.
  • Valid 5/16/26 through 5/31/26. While supplies last.

Original Post

Written by curro
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for their Members: EcoFlow River 3 Plus 286Wh Wireless Boost Combo (EFR3PLUS-W+RP5KPIN-US-CBOX) on sale for $199.99. Shipping is free.

Thanks to Community Member curro 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 Neo45 | Staff
  • This price matches our March '26 Frontpage Deal.
  • Rated 4.4 out of 5 stars from customer reviews.
  • Valid 5/16/26 through 5/31/26. While supplies last.

Original Post

Written by curro

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Top Comments

tenderidol
19945 Posts
8937 Reputation
Refurb is still available for that price at eBay, but it comes with one 5000mAh Fast Power Bank, instead of two at Costco. It possibly doesn't cost $40, but it should be included in the comparison of "new vs. refurb, one power bank vs two, 30 day return vs lifetime, etc."
Ahchuu
35 Posts
10 Reputation
I have one of these and I wouldn't buy one especially if you plan to use it as a UPS and even more so for networking gear. I have one and it has been such a disappointment. You cannot update this and have the AC inverter running. So this means your networking gear will be shut off. This would be ok if it actually downloaded the update first before turning off the AC inverter. When I need to update this, I have to connect it to my cell phones hotspot and my entire network is down while it updates. Such a pain in the ass. The second major flaw if this device has to do with the LFP batteries and the device keeping its charge/discharge calibration curve. Over time (I am talking like 1 or 2 months) the device loses how much charge it has. Then when power is lost it will quickly run to zero (this like 2 minutes) and shut off. You then have to charge and discharge the device 3 times before the charge/discharge calibration curve is reset, then then it will last for 4 hours for the load I run on the device.
I really love EcoFlows software, but this device has been a giant disappointment for using it as a UPS especially for networking gear. Do not waste your money on this. I've wasted too much of my life dealing with Ecoflow support and having them screw me. I'd wait for the River 4 Plus and wait for some reviews first before I would buy anything from Ecoflow to use as a UPS.
I would cancel your order as fast as you can, just a heads up so that you don't have to deal with all the pain and suffer I did.
silentalarm
763 Posts
660 Reputation
In for 1 for the primary use as a UPS for my Synology DS920+, Netgear CM3000 modem, and Netgear RS300 router. Total draw is roughly 60-80 watts so this will provide an estimated 3.5 - 4 hour runtime incase anyone is looking to do a similar UPS set up. Good peace of mind buying from Costco since it should also be exempt from the 90-day electronics return policy (classified as generator so basically lifetime). Also includes EcoFlow's 5 year warranty on the power station (2 years on the power banks).

44 Comments

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May 16, 2026 10:07 PM
16 Posts
Joined Nov 2018
cilvrwingMay 16, 2026 10:07 PM
16 Posts
Shop Ecoflow
EcoFlow River 3 Plus Wireless Boost Combo

https://www.costco.com/p/-/ecoflo...4000358863
May 17, 2026 03:25 AM
677 Posts
Joined Apr 2007
TheBay408May 17, 2026 03:25 AM
677 Posts
i like the "was" price
2
May 17, 2026 03:48 AM
12,912 Posts
Joined Dec 2004
kensteeleMay 17, 2026 03:48 AM
12,912 Posts
Refurb was $159 on eBay; ecoflow refurbs from ecoflow are pretty good.
3
1
Pro
May 17, 2026 04:31 AM
19,945 Posts
Joined Feb 2006
tenderidol
Pro
May 17, 2026 04:31 AM
19,945 Posts

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

Quote from kensteele :
Refurb was $159 on eBay; ecoflow refurbs from ecoflow are pretty good.
Refurb is still available for that price at eBay, but it comes with one 5000mAh Fast Power Bank, instead of two at Costco. It possibly doesn't cost $40, but it should be included in the comparison of "new vs. refurb, one power bank vs two, 30 day return vs lifetime, etc."
7
May 17, 2026 04:59 AM
103 Posts
Joined Jul 2011
Overclocker2May 17, 2026 04:59 AM
103 Posts

Our community has rated this post as helpful. If you agree, why not thank Overclocker2

I like the combo for this price. I thin it's been this price before
1
May 17, 2026 05:17 AM
763 Posts
Joined Dec 2010
silentalarmMay 17, 2026 05:17 AM
763 Posts

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

In for 1 for the primary use as a UPS for my Synology DS920+, Netgear CM3000 modem, and Netgear RS300 router. Total draw is roughly 60-80 watts so this will provide an estimated 3.5 - 4 hour runtime incase anyone is looking to do a similar UPS set up. Good peace of mind buying from Costco since it should also be exempt from the 90-day electronics return policy (classified as generator so basically lifetime). Also includes EcoFlow's 5 year warranty on the power station (2 years on the power banks).
3
May 17, 2026 09:55 AM
1,371 Posts
Joined Sep 2010
ShareTheLoveMay 17, 2026 09:55 AM
1,371 Posts
Great return policy with Costco if this doesn't work out.

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May 17, 2026 11:27 AM
3,405 Posts
Joined Aug 2006
whatgooddealMay 17, 2026 11:27 AM
3,405 Posts
Quote from kensteele :
Refurb was $159 on eBay; ecoflow refurbs from ecoflow are pretty good.
Yup. That's a better deal
2
1
May 17, 2026 11:38 AM
109 Posts
Joined Nov 2024
foxblurMay 17, 2026 11:38 AM
109 Posts
Quote from silentalarm :
In for 1 for the primary use as a UPS for my Synology DS920+, Netgear CM3000 modem, and Netgear RS300 router. Total draw is roughly 60-80 watts so this will provide an estimated 3.5 - 4 hour runtime incase anyone is looking to do a similar UPS set up. Good peace of mind buying from Costco since it should also be exempt from the 90-day electronics return policy (classified as generator so basically lifetime). Also includes EcoFlow's 5 year warranty on the power station (2 years on the power banks).
Does this just stay on all the time to act like an ups? I have an ups but needs new batteries. I'm thinking about a setup of network equipment to old ups to ecoflow. But I thought you had to turn on the ecoflow. What's it parasitic draw? I hate how all the ups still use lead acid when lipo actually has longevity.
May 17, 2026 01:00 PM
47 Posts
Joined Nov 2010
tqtatlMay 17, 2026 01:00 PM
47 Posts
Quote from kensteele :
Refurb was $159 on eBay; ecoflow refurbs from ecoflow are pretty good.
Yeah. Got the refurb and it works fine till this day
May 17, 2026 01:36 PM
483 Posts
Joined Nov 2014
userbeavisMay 17, 2026 01:36 PM
483 Posts

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

Quote from foxblur :
Does this just stay on all the time to act like an ups? I have an ups but needs new batteries. I'm thinking about a setup of network equipment to old ups to ecoflow. But I thought you had to turn on the ecoflow. What's it parasitic draw? I hate how all the ups still use lead acid when lipo actually has longevity.
I'm using one of these that I got from the $159 eBay refurb back in January - the version without the extra power packs. The main reason I was looking was to replace a failing CyberPower UPS. I've used the common APC, CyberPower, etc UPS for decades and thought it was time to at least try something different. So, it's been an experiment and so far, I've been very happy to the point that I'm considering this idea for all future UPS replacements at my house, of which I have many. I have it running my desktop PC and I've had multiple power failures and power blinks and it's failed over perfectly every time. It does have a USB connection to manage power down of your PC but I've never had an outage last long enough to see if that works. You must get the River 3 plus version for the 10ms UPS fail time. I don't think I'd risk any higher than that. I haven't checked parasitic draw but my house has solar and I look at my whole house usage almost daily and I've not noticed a change. In fact, I just pulled the plug out, while I'm using it on this PC, it failed over without a blip, and I see almost no change in my real-time whole house power usage (the precision is 1/10 kW so I'm not going to see a few watts change). Meanwhile, the Ecoflow phone app is showing I'm using about 65w for this PC with an estimated remaining run time of 3hr 48min at 95% remaining. I also checked with the PC app, after I plugged it back in and it charged back the app shows the input power is the same as the output power.
1
May 17, 2026 01:40 PM
374 Posts
Joined Sep 2013
RikBMay 17, 2026 01:40 PM
374 Posts
Quote from foxblur :
Does this just stay on all the time to act like an ups? I have an ups but needs new batteries. I'm thinking about a setup of network equipment to old ups to ecoflow. But I thought you had to turn on the ecoflow. What's it parasitic draw? I hate how all the ups still use lead acid when lipo actually has longevity.
I've had 3 of these deployed for just over a year now. 1 is on a server PC, 1 on a synology nas and 1 on a ubiquiti rack. Once you turn them on, they just stay on, and in the app you can't set a charge limit to whatever % you want (I do 80%). Once they are charged they just passthrough AC and if they die completely in an outage they will turn everything back on when they power back up.The biggest downsides are manual firmware updates cause the device to turn off and reboot so you have to plan around that before you hit update, the USB connection for initiating shutdown doesn't work on the NAS, and there's no software schedule to discharge and recharge the batteries automatically. All that being said I've had the power going out for less than 1 hour multiple times and these things held strong. I used to have two APC UPS running everything but I got sick of those saying they had 1 hour of runtime, then the power went out and they'd shut down in 1 minute and I'd be ordering new batteries again.
May 17, 2026 02:23 PM
165 Posts
Joined Apr 2025
CyanGame5296May 17, 2026 02:23 PM
165 Posts
Quote from whatgooddeal :
Yup. That's a better deal
Better, but still not competitive. There have been deals posted at around 0.25 KWh, and this is closer to $0.70. I'm guessing that the last thing most SDers need is more power banks, so that adds little value IMO.
May 17, 2026 02:39 PM
1,675 Posts
Joined Aug 2006
TiltJunkieMay 17, 2026 02:39 PM
1,675 Posts
Almost jumped on the refurb when it dropped to 150 but like this better. New, extra power bank, Costco warranty. Im in.
1

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Pro
May 17, 2026 02:43 PM
455 Posts
Joined Dec 2008
Rdog
Pro
May 17, 2026 02:43 PM
455 Posts
Quote from userbeavis :
I'm using one of these that I got from the $159 eBay refurb back in January - the version without the extra power packs. The main reason I was looking was to replace a failing CyberPower UPS. I've used the common APC, CyberPower, etc UPS for decades and thought it was time to at least try something different. So, it's been an experiment and so far, I've been very happy to the point that I'm considering this idea for all future UPS replacements at my house, of which I have many. I have it running my desktop PC and I've had multiple power failures and power blinks and it's failed over perfectly every time. It does have a USB connection to manage power down of your PC but I've never had an outage last long enough to see if that works. You must get the River 3 plus version for the 10ms UPS fail time. I don't think I'd risk any higher than that. I haven't checked parasitic draw but my house has solar and I look at my whole house usage almost daily and I've not noticed a change. In fact, I just pulled the plug out, while I'm using it on this PC, it failed over without a blip, and I see almost no change in my real-time whole house power usage (the precision is 1/10 kW so I'm not going to see a few watts change). Meanwhile, the Ecoflow phone app is showing I'm using about 65w for this PC with an estimated remaining run time of 3hr 48min at 95% remaining. I also checked with the PC app, after I plugged it back in and it charged back the app shows the input power is the same as the output power.
Quote from RikB :
I've had 3 of these deployed for just over a year now. 1 is on a server PC, 1 on a synology nas and 1 on a ubiquiti rack. Once you turn them on, they just stay on, and in the app you can't set a charge limit to whatever % you want (I do 80%). Once they are charged they just passthrough AC and if they die completely in an outage they will turn everything back on when they power back up.The biggest downsides are manual firmware updates cause the device to turn off and reboot so you have to plan around that before you hit update, the USB connection for initiating shutdown doesn't work on the NAS, and there's no software schedule to discharge and recharge the batteries automatically. All that being said I've had the power going out for less than 1 hour multiple times and these things held strong. I used to have two APC UPS running everything but I got sick of those saying they had 1 hour of runtime, then the power went out and they'd shut down in 1 minute and I'd be ordering new batteries again.
The last time this deal came up, I didn't buy it because of the issues mentioned here: https://slickdeals.net/forums/showpost.php?p=182997849&postcount=27 Are you guys doing the full charge and discharge cycle regularly? If I get this I'd only want to do the firmware update and battery cycle once a year or less.

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