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expiredDavid_David posted Mar 07, 2026 01:18 PM
expiredDavid_David posted Mar 07, 2026 01:18 PM

Costco Members: EcoFlow River 3 Plus Wireless Boost Combo

+ Free S&H

$200

$280

28% off
Costco Wholesale
28 Comments 23,492 Views
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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 SubZero5 | Staff
  • This price matches the previous +54 Frontpage Deal.
  • Rated 4.5 out of 5 stars from 150+ customer reviews.
  • $80 manufacturer's savings is valid 03/07/26 through 03/23/26. While supplies last. Limit 2 per member.
  • If you don't have a Costco Warehouse Membership, you can sign up here.
  • Details of Costco's return policy 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 SubZero5 | Staff
  • This price matches the previous +54 Frontpage Deal.
  • Rated 4.5 out of 5 stars from 150+ customer reviews.
  • $80 manufacturer's savings is valid 03/07/26 through 03/23/26. While supplies last. Limit 2 per member.
  • If you don't have a Costco Warehouse Membership, you can sign up here.
  • Details of Costco's return policy here.

Original Post

Written by David_David

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28 Comments

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Mar 08, 2026 01:16 AM
1,352 Posts
Joined Apr 2015
SirmixpixMar 08, 2026 01:16 AM
1,352 Posts
I have two of these and they are awesome. One for the router, modern and nas, the other for a few hubs like blink sync module and an indoor security cam and my wife's iMac. Interface is clean and easy to figure out. It is super quiet. I tired using one for my pc as an ups but my computer can break 600w running full tilt, so I got something else for the pc. It's a great ups with very quick switch over. I think it's like 10ms. We can get a lot of power interruptions in Florida and they've been solid for switchover with no problems many times now.
I paid more for mine and at $200 a unit, especially with the added power banks, I think it's an awesome price point.
The expansion batteries can be a bit expensive when not on sale, but if you are looking for more wh, I'd consider something else. I went with the BLUETTI elite 100 v2 for the pc because I needed the higher wattage and wanted to preserve a good ups switch over time, plus the bigger battery @1kwh.
Expert
This user is an Expert in Home & Home Improvement
Mar 08, 2026 06:03 AM
5,025 Posts
Joined Oct 2013
wherestheanykey
Expert
This user is an Expert in Home & Home Improvement
Mar 08, 2026 06:03 AM
5,025 Posts
Quote from cfrpcopy :

Like Ubuntu 22.04 LTS apparently. Can confirm it works though, running NUT in docker.
22.04 shipped with kernel v5.15, dated 2021.

So, yeah, slightly oddball to not have updated to the v6.x stack in the last 5 years.
Mar 08, 2026 12:04 PM
45 Posts
Joined Jan 2017
Fast.dealMar 08, 2026 12:04 PM
45 Posts
Will this power microwave??
Mar 08, 2026 05:30 PM
248 Posts
Joined Apr 2006
orlanthMar 08, 2026 05:30 PM
248 Posts
Quote from Fast.deal :
Will this power microwave??
Are you trolling or just too lazy to google how much power a microwave requires.

Modems/routers/switches/WiFi Access points are ~10-20 W. Microwaves are 50x-100x and sustained in order to cook something . . . .
Mar 09, 2026 04:15 AM
45 Posts
Joined Jan 2017
Fast.dealMar 09, 2026 04:15 AM
45 Posts
I am genuinely thinking it may power a compact 700 watt microwave. Since its surge up to 1200 w?? Anyone try it?
Mar 09, 2026 02:01 PM
6 Posts
Joined Dec 2013
henryrumpoleMar 09, 2026 02:01 PM
6 Posts
Quote from SiXiam :
LiFePO4
Based on my research -- and please correct me if I'm wrong -- EcoFlow uses lithium cobalt oxide batteries in its magnetic power banks, which generally have a shorter lifespan (300 cycles to 80%) and are less stable than LiFePO4. Thus, the power banks may degrade faster and have a shorter usable life than the power station itself, although this of course depends on how you use it.
2
Mar 09, 2026 04:55 PM
1,882 Posts
Joined Jun 2009
SiXiamMar 09, 2026 04:55 PM
1,882 Posts
Quote from henryrumpole :
Based on my research -- and please correct me if I'm wrong -- EcoFlow uses lithium cobalt oxide batteries in its magnetic power banks, which generally have a shorter lifespan (300 cycles to 80%) and are less stable than LiFePO4. Thus, the power banks may degrade faster and have a shorter usable life than the power station itself, although this of course depends on how you use it.
The website and amazon say the River 3 is using LiFeP04. Not sure the chemistry on the two power banks.

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Mar 10, 2026 03:21 AM
53 Posts
Joined Feb 2019
BaylorGreen84Mar 10, 2026 03:21 AM
53 Posts
Anyone connect a solar panel to this?
Mar 10, 2026 07:18 AM
2 Posts
Joined Nov 2020
icehandsMar 10, 2026 07:18 AM
2 Posts
Quote from jd87 :
Dang I bought the refurb. Should I get this instead and return the refurb when it comes in?
I've bought both. Refurb comes with only small 5000ah battery.
Mar 11, 2026 06:37 PM
13,553 Posts
Joined Apr 2005
TidalWaveOneMar 11, 2026 06:37 PM
13,553 Posts
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 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. This may be no big deal for some devices, but for other devices that need to stay on or risk corruption, it is a big deal for a UPS.
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 3 months 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.
The only reliable "solution" I have found to this is to use a normal lead acid 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, accessories) are not on the regular UPS and are directly connected to the EcoFlow AC output.
Last edited by TidalWaveOne March 12, 2026 at 09:15 AM.
1
Mar 14, 2026 05:16 AM
506 Posts
Joined Dec 2014
MangekyoSharinganMar 14, 2026 05:16 AM
506 Posts
Quote from jd87 :
Dang I bought the refurb. Should I get this instead and return the refurb when it comes in?
I don't see why you need to return the refurb if it is working. If you want to pay $40 more for the warranty from costco, then that is something to think about.
Mar 15, 2026 04:38 PM
75 Posts
Joined Apr 2019
FnaticxMar 15, 2026 04:38 PM
75 Posts
This was on special back in December for $250 and it lasted quite a lot like a month as well
Mar 25, 2026 02:54 PM
225 Posts
Joined Mar 2019
mattysaurusMar 25, 2026 02:54 PM
225 Posts
Expired

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