Source-linked model

EcoFlow RIVER 3 Max Runtime Calculator

Name: EcoFlow RIVER 3 Max
Brand: EcoFlow

Use this source-linked record to estimate runtime from tracked capacity, output, charging, and weight fields. Unknown specs stay unknown until an official or manufacturer-grade source confirms them.

EcoFlow RIVER 3 Max portable power station

Capacity572 Wh

AC output600 W

Surge1,200 W

ChemistryLiFePO4

Confidenceverified

Checked2026-06-25

Battery capacity	572 Wh
Usable capacity	unknown
Battery chemistry	LiFePO4
AC output	600 W
Surge output	1,200 W
DC output	126 W
USB-C output	100 W
Solar input	220 W
Weight	7.8 kg
Confidence	verified
Last verified	2026-06-25

Record models the RIVER 3 Plus paired with the EB300 extra battery as the RIVER 3 Max bundle.

Runtime Starting Points

These are formula estimates using the tracked capacity, a 10% reserve, and each scenario's default wattage and duty cycle. They are planning starters, not measured runtimes.

Scenario	Default load	Estimate	Scenario confidence
Full-size refrigerator	500 W at 33%	2h 39m	estimated
CPAP without heated humidifier	40 W at 100%	10h 56m	estimated
Starlink Mini	32 W at 100%	14h 29m	estimated
Wi-Fi router	12 W at 100%	1d 13h	estimated
Laptop	60 W at 100%	7h 33m	estimated

Open calculator with this station

Good fit when

Capacity is best suited to lighter essentials such as routers, laptops, CPAP planning, lights, and smaller camping loads.
Tracked AC output is 600 W, so high-draw appliances and tools need careful filtering.
USB-C output is tracked at laptop-class power, useful for direct DC charging when the device supports it.
Tracked solar input is 220 W before panel, weather, angle, and controller losses.

Watch out for

Surge output is tracked, but device startup behavior should still be checked against the actual load.
Still unknown in the source-backed record: usable capacity.

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Sources

EcoFlow RIVER 3 Plus extra battery product page (official; checked 2026-06-25)