US
EF

EcoFlow River 3 Max Plus Portable Power Station 858Wh

  • 858Wh total: 286Wh station plus 572Wh EB600
  • 600W steady, 1200W with X-Boost
  • 7 outlets: 3 UPS AC, 2 USB-A, USB-C, car output
  • Under 10 ms UPS switchover
  • 1 hour AC recharge, 1.5 hours with 220W solar
  • 3000 cycles to 80%, IP54 battery protection
  • 30 dB at 1.6 ft
  • 5-year service

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A quiet, quick charging small station with a clip on extra battery, made for home office UPS duty and camping. Output is modest, so heavy appliances are out.

As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.

ASIN: B0DQL2D1PPCategory: Generators

Styles Available

RIVER 3 Plus+EB600RIVER 3 Plus Power StationRIVER 3 Plus+ 45W Solar PanelRiver 3 Plus EB600River 3 Plus EB300River 3 Plus+EB300

Need a different one? Pick on Amazon →

Overview

A gallium nitride power stage and a clip on extra battery are the core of this EcoFlow River bundle. The main unit switches to battery fast enough to protect a computer, and the add on pack stacks extra energy through pogo pins without cables.

Fast UPS switching plus a PC data cable make it a smart guard for a home office or gaming rig. Steady output is limited, so it covers electronics and small appliances, not kitchen gear.

Who it's for

Suited to desks with a PC or NAS and to light camping. People needing big appliance power should look at a larger station.

Pros and cons

Pros
  • Fast UPS with PC software
  • Fast AC and solar recharge
  • Clip on battery expansion
  • Drop and splash resilience
Cons
  • Modest steady output
  • Solar panel not included
  • Stated weights differ in listing

Performance notes

Efficiency under light loads comes from the power stage, which the listing says doubles run time below a hundred watts. X-Boost lets some resistive loads run past the steady limit at reduced power. The UPS link to a PC triggers data saving before the battery runs out.

Specifications

BrandEF
Dimensions & fit
Item weight10.4 lbs
Item dimensions9.2 x 9.1 x 5.8 inches
Capacity & performance
Output Wattage1200W with X-Boost
Battery capacity858Wh with EB600 (286Wh plus 572Wh)
Cycle life3000 cycles to 80%
Noise level30 dB at 1.6 ft
Power & efficiency
Running Wattage600W
Included components
Included ComponentsRIVER 3 Plus, EB600 extra battery, AC charging cable, USB-B to USB-A UPS cable, user manual
Warranty & support
Warranty Description5-year service
Other details
Number of Outlets7: 3 AC, 2 USB-A, 1 USB-C, 1 car output
Recharge time1 hour AC, 1.5 hours solar
Solar charging220W input
Ups switchoverUnder 10 ms

Frequently asked questions

How big is the EcoFlow RIVER 3 Plus?

The listing gives 9.2 x 9.1 x 5.8 inches and 10.4 lbs for the station.

How does the EB600 connect to the RIVER 3 Plus?

It clips on with Pogo Pin technology, no cable needed, and adds a 140W USB-C port.

Will the RIVER 3 Plus protect my PC in an outage?

Yes. It switches over in under 10 ms, and the included UPS communication cable allows automatic data saving on low battery.

Can the RIVER 3 Plus handle a fall?

The listing says it will not be damaged by a 3 ft fall.