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EcoFlow RIVER 2 Pro Runtime Calculator

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 2 Pro portable power station
Capacity768 Wh
AC output800 W
Surge1,600 W
ChemistryLFP
ConfidenceVerified
Source regionglobal/general
Checked2026-08-21
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Key specifications for EcoFlow RIVER 2 Pro.
Battery capacity768 Wh
Battery chemistryLFP
AC output800 W
Surge output1,600 W
DC output126 W
USB-C output100 W
Solar input220 W
Weight8.25 kg
ConfidenceVerified
Lifecycle statusUnknown
Source regionglobal/general
Last verified2026-08-21
The 1,600W value is retained because EcoFlow's exact specification publishes it as surge separately from the 800W rated AC output.

Third-party measured tests

These are published third-party measurements for this model. The delta compares measured delivered Wh with WattRunTime's default no-reserve planning estimate for the same output path; it is not a new measurement.

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Third-party measured runtime and capacity records for EcoFlow RIVER 2 Pro.
TestMeasuredDefault estimateVs estimateSource
Capacity test (AC)
test date unknown		620 Wh
81% usable		653 Wh-33 Wh (-5%)OutdoorGearLab Best Power Stations of 2026
accessed 2026-08-20
Capacity test (AC)
test date unknown		640 Wh
83% usable		653 Wh-13 Wh (-2%)HoboTech EcoFlow River 2 Pro review
accessed 2026-08-07
Capacity test (DC)
test date unknown		670 Wh
87% usable		691 Wh-21 Wh (-3%)HoboTech EcoFlow River 2 Pro review
accessed 2026-08-07
Open the measured runtime library

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.

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Runtime starting-point estimates for EcoFlow RIVER 2 Pro.
ScenarioDefault loadEstimateScenario confidenceStation page
Full-size refrigerator500 W at 33%3h 34mEstimatedOpen estimate
CPAP without heated humidifier40 W at 100%14h 41mEstimatedOpen estimate
Starlink Mini32 W at 100%19h 26mEstimatedOpen estimate
Wi-Fi router12 W at 100%2d 2hEstimatedOpen estimate
LED TV100 W at 100%5h 53mEstimatedOpen estimate
Open calculator with this station

Calculator for this station

Adjust watts, duty cycle, reserve, output path, and startup surge with EcoFlow RIVER 2 Pro prefilled from the source-linked specs above.

Loading calculatorPreparing calculator
Power station model
Battery capacity (Wh): 768 WhContinuous output rating (W): 800 WSurge output rating (W): 1600 W
EcoFlow RIVER 2 Pro
Estimated runtime9h 48m6h 8m – 12h 10mEstimated runtime: 9h 48m, 6h 8m – 12h 10m
Output path

Estimated runtime

9h 48mEstimated runtime: 9h 48m

This setup may cover a partial outage or single overnight session. Add capacity for more margin.

Conservative6h 8m
Estimated9h 48m
Optimistic12h 10m

Conservative assumes harder conditions; optimistic assumes favorable conditions.

  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.

Show your work

Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.

Rated battery
768 Wh
Usable energy
588 Wh
768 Wh x 85% x 90% x 100% x 100%
Running watts
60 W
Average load
60 W
Max surge
n/a
Fixed station overhead
Unknown (not included)
60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime
9h 48m
588 Wh / 60 W = 9h 48m
Output path
AC inverter
Efficiency (%)
85
Reserve kept unused (%)
10
Battery health (%)
100
Cold weather loss (%)
0

This link contains the numeric values you entered, but not custom load names.

Source-Backed Next Steps

WattRunTime.com

WattRunTime estimate

Estimated runtime

9h 48mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.
Usable energy588 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a

Runtime range

Conservative6h 8m
Estimated9h 48m
Optimistic12h 10m

Show your work

Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.

Usable energy588 Wh768 Wh x 85% x 90% x 100% x 100%
Fixed station overheadUnknown (not included)60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime9h 48m588 Wh / 60 W = 9h 48m

Assumptions

  • 768 Wh nominal battery capacity
  • AC inverter output path
  • 85% conversion efficiency
  • 10% reserve kept unused
  • 60 W average load from 1 load
  • 100% battery health
  • 0% temperature loss
  • Fixed station overhead unknown; not included

Warnings

  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.

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 800 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.

Related EcoFlow Records

Nearby source-linked models from the same brand help you compare capacity, output, and unknown fields without leaving the data set.

RIVER 3 Max

572 Wh, 600 W AC output, confidence: Verified.

DELTA 2

1,024 Wh, 1,800 W AC output, confidence: Verified.

Compare RIVER 2 Pro With Similar Stations

These source-aware comparisons use the same assumptions on both sides and keep unknown fields visible.

Sources