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frontpageforix posted Mar 12, 2026 01:13 PM
frontpageforix posted Mar 12, 2026 01:13 PM

EF ECOFLOW River 3 Plus Portable Power Station w/ EB600 Extra Battery

+ Free S&H

$379

$469

19% off
Amazon
22 Comments 13,405 Views
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ECOFLOW Direct via Amazon has EF ECOFLOW River 3 Plus Portable Power Station w/ EB600 Extra Battery (EF-RV-H02-1) on sale for $379. Shipping is free.

Thanks to community member forix for finding this deal.

Features:
  • Delivers a steady 600W and surges to 1200W with X-Boost
  • Features 7 outlets—including 3 UPS-supported AC, 2 USB-A, a high-speed USB-C, and a car charger output
  • Additional battery offers a 140W USB-C port for extra input and output options
  • Operates at a quiet 30 dB
  • AC charging from 0-100% in just 1 hour
  • IP54 battery protection & fire-retardant shell
  • RIVER 3 Plus has a lifespan of 3000 charging cycles (RIVER 3 Plus has a lifespan of 3000 charging cycles)
  • User-friendly app provides personalized charging options like speed control, timed charging, power-saving mode, and low-battery notifications
  • Seamless connectivity with the RIVER 3 Plus through Bluetooth and Wi-Fi

Editor's Notes

Written by megakimcheelove | Staff
  • 5-year warranty
  • Our research indicates that this offer is $66.75 lower (15% savings) than the next best available price from a reputable merchant with prices starting from $445.55.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by forix
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
ECOFLOW Direct via Amazon has EF ECOFLOW River 3 Plus Portable Power Station w/ EB600 Extra Battery (EF-RV-H02-1) on sale for $379. Shipping is free.

Thanks to community member forix for finding this deal.

Features:
  • Delivers a steady 600W and surges to 1200W with X-Boost
  • Features 7 outlets—including 3 UPS-supported AC, 2 USB-A, a high-speed USB-C, and a car charger output
  • Additional battery offers a 140W USB-C port for extra input and output options
  • Operates at a quiet 30 dB
  • AC charging from 0-100% in just 1 hour
  • IP54 battery protection & fire-retardant shell
  • RIVER 3 Plus has a lifespan of 3000 charging cycles (RIVER 3 Plus has a lifespan of 3000 charging cycles)
  • User-friendly app provides personalized charging options like speed control, timed charging, power-saving mode, and low-battery notifications
  • Seamless connectivity with the RIVER 3 Plus through Bluetooth and Wi-Fi

Editor's Notes

Written by megakimcheelove | Staff
  • 5-year warranty
  • Our research indicates that this offer is $66.75 lower (15% savings) than the next best available price from a reputable merchant with prices starting from $445.55.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by forix

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Deal Score
+45
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Price Intelligence

Model: EF ECOFLOW Portable Power Station River 3 Plus with EB600 Extra Battery, Expand Capacity from 286Wh to 858Wh, 3 Up to 1200W AC Outlets, <10 MS UPS, <30 dB Quiet, River 3 Max Plus LiFePO4 Battery

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TidalWaveOne
13512 Posts
4403 Reputation
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 it is a big deal for other 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 1-3 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 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, accessories) are not on the regular UPS and are directly connected to the EcoFlow AC output.
cmacclel
1174 Posts
158 Reputation
Meh.......I'd rather a Bluetti Elite 100v2. More capacity (1024wh) and 1800w continuous while weighing in at like 25lbs. They pop up on Ebay with 5 year warranties for just over $300. When testing mine I was able to sustain 2600w for like 15 seconds......I was shocked.
Ahchuu
33 Posts
10 Reputation
I have the same exact issue as you. I am almost positive it is because this device creates bad voltage calibration data of the LFP batteries over time. LFP batteries have a flatter discharge curve compared to Li-ion. I've not taken mine apart yet, but I assume this device is using an IC that doesn't have a high level of precision for the voltage readings of the batteries. The low precision IC causes calibration drift over time, leading to needing a monthly calibration. If you don't calibrate, the software thinks the battery is more depleted than it actually is so it shuts off.
I have complained to Ecoflow many times about this in the River 3 Plus. They have offered to send me a new one, but as far as I can tell they have not improved the design. I really like Ecoflow's software, but I would wait for a River 4 and wait for reviews to verify if this design flaw was fixed, before I would would buy an Ecoflow again. This was my first Ecoflow product and I was very disappointed.

22 Comments

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Mar 12, 2026 02:38 PM
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SlickproexpertMar 12, 2026 02:38 PM
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Nice battery
Mar 12, 2026 02:56 PM
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cmacclelMar 12, 2026 02:56 PM
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Meh.......I'd rather a Bluetti Elite 100v2. More capacity (1024wh) and 1800w continuous while weighing in at like 25lbs. They pop up on Ebay with 5 year warranties for just over $300. When testing mine I was able to sustain 2600w for like 15 seconds......I was shocked.
Last edited by cmacclel March 12, 2026 at 11:35 AM.
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MinhTrinh
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Use code 8S27HMZB to save 5%
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TidalWaveOneMar 12, 2026 04:14 PM
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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 it is a big deal for other 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 1-3 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 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, accessories) are not on the regular UPS and are directly connected to the EcoFlow AC output.
Last edited by TidalWaveOne March 12, 2026 at 12:38 PM.
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Mar 12, 2026 04:26 PM
33 Posts
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AhchuuMar 12, 2026 04:26 PM
33 Posts

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

Quote from TidalWaveOne :
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.
I have the same exact issue as you. I am almost positive it is because this device creates bad voltage calibration data of the LFP batteries over time. LFP batteries have a flatter discharge curve compared to Li-ion. I've not taken mine apart yet, but I assume this device is using an IC that doesn't have a high level of precision for the voltage readings of the batteries. The low precision IC causes calibration drift over time, leading to needing a monthly calibration. If you don't calibrate, the software thinks the battery is more depleted than it actually is so it shuts off.
I have complained to Ecoflow many times about this in the River 3 Plus. They have offered to send me a new one, but as far as I can tell they have not improved the design. I really like Ecoflow's software, but I would wait for a River 4 and wait for reviews to verify if this design flaw was fixed, before I would would buy an Ecoflow again. This was my first Ecoflow product and I was very disappointed.
Last edited by Ahchuu March 12, 2026 at 09:29 AM.
1
Mar 12, 2026 05:23 PM
13 Posts
Joined Nov 2017
TheDuctTapeDudeMar 12, 2026 05:23 PM
13 Posts
Quote from TidalWaveOne :
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.
Is X-Boost off? I read somewhere the UPS power handling is better without it. I could be mistaken though.
I've been running one of these for months attached to a tankless gas water heater, which admittedly is less electricity intensive (up to 45W) than a computer setup, but it's been great.
Been debating on getting an extra battery because it enables USB-C charging, and putting a USB-C adapter in front of the EcoFlow would be good enough for my power conditioning concerns. Plus, the novelty of having hot water from a phone USB charger is funny to me.
1
Mar 12, 2026 06:59 PM
62 Posts
Joined Nov 2007
exceljockeyMar 12, 2026 06:59 PM
62 Posts
Quote from TheDuctTapeDude :
Is X-Boost off? I read somewhere the UPS power handling is better without it. I could be mistaken though.I've been running one of these for months attached to a tankless gas water heater, which admittedly is less electricity intensive (up to 45W) than a computer setup, but it's been great.Been debating on getting an extra battery because it enables USB-C charging, and putting a USB-C adapter in front of the EcoFlow would be good enough for my power conditioning concerns. Plus, the novelty of having hot water from a phone USB charger is funny to me.
My river 2 pro does the same, randomly cuts ac power to my NAS and router from time to time.

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Mar 12, 2026 07:31 PM
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TidalWaveOneMar 12, 2026 07:31 PM
13,512 Posts
Quote from TheDuctTapeDude :
Is X-Boost off?
Yep, X-Boost is off. One of the first things I do is turn that off.
Last edited by TidalWaveOne March 12, 2026 at 12:34 PM.
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Mar 12, 2026 07:35 PM
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forix
Original Poster
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Mar 12, 2026 07:35 PM
104 Posts
I've been using one of these for a few months now as a UPS in front of a proxmox server, synology NAS, a network switch, and a raspberry pi, and have not had any issues so far. Watt usage has been low though (sub 100W). Just looked at the uptime on the proxmox server and it's 57 days. Meanwhile I've had a few minor power losses at home in that same time frame.
Was thinking about getting one more for the tankless heater/boiler
Mar 12, 2026 10:15 PM
13,512 Posts
Joined Apr 2005
TidalWaveOneMar 12, 2026 10:15 PM
13,512 Posts
Quote from forix :
I've been using one of these for a few months now as a UPS in front of a proxmox server, synology NAS, a network switch, and a raspberry pi, and have not had any issues so far. Watt usage has been low though (sub 100W). Just looked at the uptime on the proxmox server and it's 57 days. Meanwhile I've had a few minor power losses at home in that same time frame.
Was thinking about getting one more for the tankless heater/boiler
Try fully discharging the battery and recharging every month like EcoFlow recommends and let us know how it goes.
1
2
Mar 13, 2026 02:26 AM
1,175 Posts
Joined Nov 2009
velocirapt0rMar 13, 2026 02:26 AM
1,175 Posts
Quote from TidalWaveOne :
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 it is a big deal for other 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 1-3 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 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, accessories) are not on the regular UPS and are directly connected to the EcoFlow AC output.
Yes you still need a real UPS these can't be fully trusted but I do extend my UPS with these
1
Mar 13, 2026 03:13 AM
5 Posts
Joined Oct 2018
JoeT8190Mar 13, 2026 03:13 AM
5 Posts
Quote from TidalWaveOne :
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 it is a big deal for other 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 1-3 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 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, accessories) are not on the regular UPS and are directly connected to the EcoFlow AC output.
I guess I got a good one because I've used it as a UPS for my NAS for 4 months, never done any discharge and as far as I can tell it's never reset/powered off. It does suck that I can't update the firmware without losing power. I found this out the hard way with my delta 3 plus that is a UPS for my ONT, garage fridge and other items.
Mar 13, 2026 03:30 AM
13,512 Posts
Joined Apr 2005
TidalWaveOneMar 13, 2026 03:30 AM
13,512 Posts
Quote from JoeT8190 :
I guess I got a good one because I've used it as a UPS for my NAS for 4 months, never done any discharge and as far as I can tell it's never reset/powered off. It does suck that I can't update the firmware without losing power. I found this out the hard way with my delta 3 plus that is a UPS for my ONT, garage fridge and other items.
So you are not discharging and recharging every month as recommended? I try to do it every 3 months but EcoFlow support just told me they recommend every month!
1
1
Mar 13, 2026 05:32 AM
724 Posts
Joined Apr 2016
jhc651Mar 13, 2026 05:32 AM
724 Posts
I have my modem/router, Mac & monitor plugged into a small, cheap APC lead acid UPS which is then plugged into my Bluetti Elite 30 V2. It's my understanding the APC UPS will condition the power to deal with over/under voltage, etc as it's my understanding the Bluetti when running on AC grid power merely passes the power directly thru without using it's own battery. The APC UPS also is connected to my Mac via USB and will gently shut it down when it's power gets low to prevent any file corruption, etc like would happen if you just pulled the plug out of the wall suddenly.
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Mar 13, 2026 02:52 PM
70 Posts
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FancyPocket4020Mar 13, 2026 02:52 PM
70 Posts
Anyone have thoughts on using this to power a starlink mini + a small laptop (no GPU)

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