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expiredcurro posted May 16, 2026 9:33 PM

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

$200

$280

28% off
+ Free S&Hat Costco Wholesale
44 Comments
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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

Community Voting

Deal Score
+68
Good Deal
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Top Comments

tenderidol
20KComments
8.9KReputation
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."
Go to Comment
Ahchuu
37Comments
10Reputation
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.
Go to Comment
silentalarm
774Comments
664Reputation
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).
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44 Comments

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Pro
May 17, 2026 3:35 PM
20K Comments
Joined Feb 2006
tenderidol
Pro
May 17, 2026 3:35 PM
20K Comments
Quote from TiltJunkie :
Almost jumped on the refurb when it dropped to 150 but like this better. New, extra power bank, Costco warranty. Im in.
This is the way
May 17, 2026 4:01 PM
223 Comments
Joined Nov 2017
pktarMay 17, 2026 4:01 PM
223 Comments
Looking for UPS, this might be a good fit.
May 17, 2026 4:35 PM
687 Comments
Joined Nov 2007
xtreme571May 17, 2026 4:35 PM
687 Comments
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.
Does it show up as UPS when connected to NAS? I've got a Synology and have this unit coming as a backup. If it doesn't show up, I wonder if I'll have to setup a NUT on a Pi to be the server for NAS to hook into that.
May 17, 2026 4:53 PM
535 Comments
Joined Sep 2006
Alpine_May 17, 2026 4:53 PM
535 Comments
Bought this last year to backup my router/modem. Considering buying another to backup my cpap machine. Hmm.
May 17, 2026 4:57 PM
37 Comments
Joined Aug 2011
AhchuuMay 17, 2026 4:57 PM
37 Comments

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

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).
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.
6
May 17, 2026 4:58 PM
37 Comments
Joined Aug 2011
AhchuuMay 17, 2026 4:58 PM
37 Comments
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 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.
3
May 17, 2026 5:21 PM
226 Comments
Joined Mar 2012
ZipsortMay 17, 2026 5:21 PM
226 Comments
Quote from Ahchuu :
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.
How often are you updating this thing to provide you so much pain and suffering?
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May 17, 2026 5:49 PM
495 Comments
Joined Nov 2014
userbeavisMay 17, 2026 5:49 PM
495 Comments
Quote from Zipsort :
How often are you updating this thing to provide you so much pain and suffering?
I've not had the same experience with mine. I've only had 1 update in the 5mo I've had it. I don't recall it being an event and I have my primary PC that's always running attached to it. I'm on v1.33.81.60
May 17, 2026 5:54 PM
226 Comments
Joined Mar 2012
ZipsortMay 17, 2026 5:54 PM
226 Comments
Quote from userbeavis :
I've not had the same experience with mine. I've only had 1 update in the 5mo I've had it. I don't recall it being an event and I have my primary PC that's always running attached to it. I'm on v1.33.81.60
Yeah, I got the feeling he's being a little too dramatic here about a battery.
May 17, 2026 6:12 PM
535 Comments
Joined Sep 2006
Alpine_May 17, 2026 6:12 PM
535 Comments
Quote from userbeavis :
I've not had the same experience with mine. I've only had 1 update in the 5mo I've had it. I don't recall it being an event and I have my primary PC that's always running attached to it. I'm on v1.33.81.60
Yeah I only updated it when I got it. I'm not interested in further updates. I'm not sure why he's having all those update issues. Why even have automatic updates on? I wouldn't.
1
May 17, 2026 8:47 PM
1.4K Comments
Joined Sep 2008
slipperybargainsmanMay 17, 2026 8:47 PM
1.4K Comments
I picked up one of the refurbs off ebay with 1 battery recently.

One thing I'll note is that when the powerbank is installed, it has a very high pitched whine. Not sure if it's mine or if this is always the case but for that reason, I wouldn't really put much value in it. I've got plenty of other powerbanks so the extra one or two that come with this isn't much of a benefit.

Now, brand new and costco return policy are good reasons to go with this price. May consider buying another one.
May 17, 2026 10:57 PM
365 Comments
Joined Mar 2018
bradymartinMay 17, 2026 10:57 PM
365 Comments
a year ago i would have jumped on this but recently there have been 1000kw powerstation on sale for $400
Pro
May 18, 2026 1:14 AM
13.8K Comments
Joined Apr 2005
TidalWaveOne
Pro
May 18, 2026 1:14 AM
13.8K Comments
Beware of using this as a UPS! I was impressed at first, using as a UPS but there are serious issues with the unit cutting AC power and turning off my computer, NAS, switch, and other devices for seemingly no reason even with the latest firmware (and I was no where near overloading the 600 watt capacity). Also there is no advertised surge protection, so I bought a good surge protector and then plugged the EcoFlow into it. Also these units won't go to battery power if the input AC voltage gets too low or too high (or it will but the voltage limits are unsatisfactory (too low/high) for a computer UPS). And EcoFlow support told me (on 2026-03-12) "it is recommended to perform a full charge and discharge cycle once per month". I assume this is to maintain battery health and ensure the Battery Management System (BMS) remains accurately calibrated but there is no automated way to do this and no way to do it knowing that the AC outputs will stay on even if plugged into a wall outlet. EcoFlow support (on 2026-03-23) also told me to avoid using the device as a UPS during SOC (state of charge) calibration. This means every month you're suppose to stop using the device as a UPS, fully charge and discharge the battery, then charge it again and then you can use it as a UPS for another month until which time you have to do this all over again. Who wants to have a UPS like this especially if it is a UPS for devices that need to stay on or risk corruption?
Using the 'backup reserve' feature to manually discharge the batteries will likely cut your AC power off even when the unit is still plugged into the grid, as it has done multiple times for me even with the unit indicating the battery is still at 20% or over (and with less than a 300 watt load). Updating the firmware also shuts off AC power. Unexpectedly shutting off the AC power when plugged into the grid is not acceptable for a UPS. My CyberPower UPS units didn't have these issues. I'm not happy that this has still not been fixed and EcoFlow support has been no help. In my opinion, these River 3 Plus units are definitely not "pro-grade" or "premium" UPS units. If they were then they wouldn't shut off AC power unexpectedly and you wouldn't have to manually baby the unit every month by discharging and recharging manually. This becomes even more of an issue if you have multiple units because you have to manually manage each one.
Furthermore, according to AI, using an extra battery, like an EB300 or EB600, can increase the liklihood of unexpected AC power shutoffs "due to complex battery communication and handover logic".
The only reliable "solution" I have found to this is to use a normal lead acid battery UPS (like APC or CyberPower) plugged into the EcoFlow. I put my most critical devices on it (like computers and NAS) so they stay on when the EcoFlow fails to keep the AC power on. Other non-critical items that aren't such a big deal if they get powered off (i.e. smart devices, monitors, speakers, accessories) are not on the lead acid UPS and are directly connected to the EcoFlow AC output.
1
May 18, 2026 1:34 AM
74 Comments
Joined Sep 2013
briballdoMay 18, 2026 1:34 AM
74 Comments
~$150 deal from eBay seems better. But if you really want to use the rechargeable battery it may be worth spending a bit more for this Costco version that comes with 2. Very annoying you can't replace these separately, but otherwise love this power station + the additional EB300 battery I picked up.

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May 18, 2026 2:16 AM
617 Comments
Joined Oct 2013
FoRealz8May 18, 2026 2:16 AM
617 Comments
Quote from xtreme571 :
Does it show up as UPS when connected to NAS? I've got a Synology and have this unit coming as a backup. If it doesn't show up, I wonder if I'll have to setup a NUT on a Pi to be the server for NAS to hook into that.
It does not and honestly was a big disappointment...

There are some ways around it if you want to go through terminal and adjust values etc, but plug and play doesn't work. Recently discovered this and was pretty bummed.

If Synology updates their version of NUT in the future after NUT updates their version it would fix it. They've got a GitHub post with that slated for the future, but who knows with that timeline.

It's a bummer, but the pi solution would work

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