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EcoFlow DELTA 2 Refrigerator Runtime Estimate

A 1kWh-class outage check for a cycling full-size refrigerator. The estimate uses the same runtime engine as the main calculator and keeps source confidence visible.

EcoFlow DELTA 2 portable power station

Exceeds a tracked power limit — do not rely on these hours

4h 45m

Estimated runtime: Full-size refrigerator. Exceeds a tracked power limit — do not rely on these hours

8h 0m

Planning default · ? 4h 45m

AC inverter

Continuous output rating (W): 1,800 W

Full-size refrigerator: 500 W · Duty cycle (%): 33% · Efficiency (%): 85% · Reserve kept unused (%): 10%. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

Runtime range

These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.

Conservative2h 58m
Estimated4h 45m
Optimistic5h 54m

Assumptions

Use this as a planning estimate, not a guaranteed runtime claim.

  • Battery capacity (Wh): 1,024 Wh
  • Device wattage (W): 500 W
  • Duty cycle (%): 33%
  • Output path: AC inverter
  • Efficiency (%): 85%
  • Reserve kept unused (%): 10%
  • Battery health (%): 100%
  • Cold weather loss (%): 0%
  • Device startup surge (W): 2,900 W
  • Fixed station overhead unknown; not included
  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
  • Exceeds a tracked power limit — do not rely on these hours
  • The largest startup surge (2,900 W) is above the selected station surge rating (2,700 W).

Sources

Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.

Confidence

Models: Verified. Device scenario: Estimated. Last verified: 2026-08-20. Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.

Runtime sensitivity

These computed checks show how reserve, battery health, and temperature assumptions move the estimate before you trust one number.

Current assumptions

4h 45m

Reserve: 10% · Battery health: 100% · Temperature loss: 0%

  • Usable energy: 783 Wh
  • Average load: 165 W

Higher reserve

4h 13m

Reserve: 20% · Battery health: 100% · Temperature loss: 0%

  • Usable energy: 696 Wh
  • Average load: 165 W

Cold or aged battery

3h 38m

Reserve: 10% · Battery health: 90% · Temperature loss: 15%

  • Usable energy: 599 Wh
  • Average load: 165 W

Nearby station estimates

Compare this result with nearby source-linked model pages for the same device scenario.

EcoFlow DELTA 3 Classic

4h 45m · 500 W · Reserve: 10%. Within the tracked power limits; compatibility still needs checking

Open estimate

Goal Zero Yeti 1000 LiFePO4

4h 38m · 500 W · Reserve: 10%. Within the tracked power limits; compatibility still needs checking

Open estimate

Goal Zero Yeti 1000X

4h 37m · 500 W · Reserve: 10%. Within the tracked power limits; compatibility still needs checking

Open estimate

Next step

Open the parent records before using this estimate for a purchase or backup plan.

Sources

These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.

Assumptions to check

FAQ

Use this as a planning estimate, not a guaranteed runtime claim.

EcoFlow DELTA 2: Estimated runtime?

4h 45m. Exceeds a tracked power limit — do not rely on these hours. Full-size refrigerator: 500 W · Duty cycle (%): 33% · Efficiency (%): 85% · Reserve kept unused (%): 10%. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

Assumptions?

This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours. These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.