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Ecoflow River 3 Max Portable Power Station

Ecoflow River 3 Max Portable Power Station | 572Wh, 600W Output
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$449.00
$449.00 - $449.00
$449.00
$439.00
$439.00 - $439.00
$439.00
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EcoFlow RIVER 3 Max Portable Power Station

EcoFlow RIVER 3 Max Portable Power Station (572Wh)

The RIVER 3 Max is a two-piece system: an EcoFlow RIVER 3 Plus paired with an Extra Battery 300, giving 572Wh of total capacity and 600W of output with a 1200W surge. That's enough for a full-size fridge, a coffee maker, or most power tools — a different class of appliance from the base RIVER 3.

Charging is quick from any source: 60 minutes to full on AC or generator, 1.5 hours on 220W of solar. It runs under 30dB with sub-10ms UPS switchover and two rear AC outlets designed to hide cables behind a desk, plus LED, app, and software outage alerts. Renewable Outdoors is an authorized EcoFlow dealer.

  • 572Wh Across Two Units: A RIVER 3 Plus plus an Extra Battery 300 — double the capacity of the Plus on its own.
  • 600W Output, 1200W Surge: X-Boost carries appliances to 1200W, so a fridge or a coffee maker is comfortably within reach.
  • Full Charge in 60 Minutes: 380W AC input, or 1.5 hours from 220W of solar — unusually quick for this capacity.
  • Under 10ms UPS: Fast enough for a desktop, router, or NAS; two rear AC outlets keep the cabling tidy behind a desk.
  • Outage Alerts: LED, app, and software notifications tell you the moment grid power drops, rather than leaving you to notice.
  • 3000 Cycles to 80%: LiFePO4 cells with roughly ten years of service life at typical use.

Renewable Outdoors is an authorized EcoFlow dealer. Our Lowest Price Guarantee applies to every order — call us at (303) 876-7654 if you're unsure which part fits your setup and we'll check it for you.

RIVER 3 Max Specifications

Total Capacity 572Wh (286Wh RIVER 3 Plus + 286Wh Extra Battery 300)
Cell Chemistry LiFePO4 — 3000 cycles to 80% capacity
AC Output 3 outlets, 600W total (1200W surge, 1200W X-Boost)
USB-C Output 1 port, 100W max (5/9/12/15V-3A, 20V-5A)
USB-A Output 2 ports, 12W max per port (24W total)
Car Output 1 outlet, 12.6V, 10A, 126W max
AC Input 380W — 0–100% in 60 minutes
Solar Input 220W — 0–100% in as fast as 1.5 hours
Car Input 220W, 11–55V — 0–100% in 3.3 hours
Generator Input 380W — 0–100% in 60 minutes
UPS Switchover Under 10ms
Noise Level Under 30dB
Charge Temperature 32°F to 113°F
Discharge Temperature 14°F to 113°F
Optimal Operating Temperature 68°F to 86°F
Main Unit Dimensions 9.2" × 9.1" × 5.8"
Main Unit Weight 10.4 lbs (Extra Battery 300 adds to this)
In the Box RIVER 3 Plus, Extra Battery 300, AC charging cable, car charging cable, data/communication cable
SKU EFRIVER3Max

EcoFlow's naming in this range takes a moment to decode, so it's worth being clear: the RIVER 3 Plus is the 286Wh base unit, the RIVER 3 Max is that unit together with an Extra Battery 300 for 572Wh total, and the RIVER 3 Max Plus pairs it with an Extra Battery 600 for 858Wh. This listing is the RIVER 3 Max, so you're getting 572Wh across two pieces. The dimensions and weight above are for the main unit; the Extra Battery 300 sits alongside it as a separate piece. Call us at (303) 876-7654 if the combined footprint matters for where you plan to keep it.

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