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EcoFlow RIVER 2 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.
Capacity512 Wh
AC output500 W
Surge1,000 W
ChemistryLFP
ConfidenceEstimated
Source regionUS
Checked2026-08-21
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| Battery capacity | 512 Wh |
|---|---|
| Battery chemistry | LFP |
| AC output | 500 W |
| Surge output | 1,000 W |
| DC output | 126 W |
| USB-C output | 100 W |
| Solar input | 220 W |
| Weight | 6.1 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | US |
| Last verified | 2026-08-21 |
The exact US specification table and manual support the stored 6.1kg weight, while marketing copy on the same current page says 13.2lb; the conflict remains visible through estimated confidence. The 1,000W value is retained because the specification labels it as surge separately from the 500W rated output.
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 22m | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 9h 48m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 12h 58m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 1d 9h | Estimated | Use calculator |
| LED TV | 100 W at 100% | 3h 55m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with EcoFlow RIVER 2 Max prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 512 WhContinuous output rating (W): 500 WSurge output rating (W): 1000 W
Estimated runtime6h 32m4h 5m – 8h 6mEstimated runtime: 6h 32m, 4h 5m – 8h 6m
Output path
Estimated runtime
6h 32mEstimated runtime: 6h 32mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.
Conservative4h 5m
Estimated6h 32m
Optimistic8h 6m
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
- 512 Wh
- Usable energy
- 392 Wh
- 512 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
- 6h 32m
- 392 Wh / 60 W = 6h 32m
- 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 v2
WattRunTime.com
WattRunTime estimate
Estimated runtime
6h 32mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.Usable energy392 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative4h 5m
Estimated6h 32m
Optimistic8h 6m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy392 Wh512 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 runtime6h 32m392 Wh / 60 W = 6h 32m
Assumptions
- 512 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 500 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.
- Confidence is not marked verified; keep the linked source context visible before making a purchase or emergency plan.
Related EcoFlow Records
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Sources
- EcoFlow RIVER 2 Max specifications (official; checked 2026-08-21)
- EcoFlow RIVER 2 Max user manual (official; checked 2026-08-21)