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EcoFlow RIVER Max 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.
Quick answer: the EcoFlow RIVER Max stores 576 Wh and delivers up to 600 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 4.4 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.
Capacity576 Wh
AC output600 W
Surge1,200 W
ChemistryLithium-ion
ConfidenceEstimated
Source regionglobal/general
Checked2026-08-27
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| Battery capacity | 576 Wh |
|---|---|
| Battery chemistry | Lithium-ion |
| AC output | 600 W |
| Surge output | 1,200 W |
| DC output | unknown |
| USB-C output | 100 W |
| Solar input | 200 W |
| Weight | 7.7 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | global/general |
| Last verified | 2026-08-27 |
The RIVER Max is the first-generation RIVER shipped with its extra battery attached; the pack detaches to leave a 288Wh RIVER. The car power output is not published as a wattage, so DC output stays unknown.
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.
Swipe table sideways
| Scenario | Default load | Estimate | Scenario confidence | Station page |
|---|---|---|---|---|
| Full-size refrigerator | 500 W at 33% | 2h 40m | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 11h 1m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 14h 35m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 1d 14h | Estimated | Use calculator |
| LED TV | 100 W at 100% | 4h 24m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with EcoFlow RIVER Max prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 576 WhContinuous output rating (W): 600 WSurge output rating (W): 1200 W
Estimated runtime7h 21m4h 36m – 9h 7mEstimated runtime: 7h 21m, 4h 36m – 9h 7m
Output path
Estimated runtime
7h 21mEstimated runtime: 7h 21mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.
Conservative4h 36m
Estimated7h 21m
Optimistic9h 7m
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
- 576 Wh
- Usable energy
- 441 Wh
- 576 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
- 7h 21m
- 441 Wh / 60 W = 7h 21m
- 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
Smallest matching record (8h)Jackery Explorer 600 Plus
WattRunTime.com
WattRunTime estimate
Estimated runtime
7h 21mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.Usable energy441 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative4h 36m
Estimated7h 21m
Optimistic9h 7m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy441 Wh576 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 runtime7h 21m441 Wh / 60 W = 7h 21m
Assumptions
- 576 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.
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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 200 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: dc output.
- Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.
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.
RIVER 2 Max
512 Wh, 500 W AC output, confidence: Estimated.
RIVER Pro
720 Wh, 600 W AC output, confidence: Estimated.
Sources
- EcoFlow official RIVER Max specification table (official; checked 2026-08-27)