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Goal Zero Yeti 1000 LiFePO4 CPAP Runtime Estimate

A LiFePO4 Goal Zero CPAP runtime check with conservative reserve. The estimate uses the same runtime engine as the main calculator and keeps source confidence visible.

Goal Zero Yeti 1000 LiFePO4 portable power station

Within the tracked power limits; compatibility still needs checking

18h 2m

Estimated runtime: CPAP without heated humidifier. Within the tracked power limits; compatibility still needs checking

8h 0m

Planning default · ≤ 18h 2m

AC inverter

Continuous output rating (W): 2,000 W

CPAP without heated humidifier: 40 W · Duty cycle (%): 100% · Efficiency (%): 85% · Reserve kept unused (%): 15%. 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.

Conservative11h 12m
Estimated18h 2m
Optimistic22h 28m

Assumptions

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

  • Battery capacity (Wh): 998.4 Wh
  • Device wattage (W): 40 W
  • Duty cycle (%): 100%
  • Output path: AC inverter
  • Efficiency (%): 85%
  • Reserve kept unused (%): 15%
  • Battery health (%): 100%
  • Cold weather loss (%): 0%
  • Device startup surge (W): Not required
  • 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.
  • Within the tracked power limits; compatibility still needs checking
  • CPAP values are editable planning assumptions, not a manufacturer-approved battery prescription. Check the exact device, pressure, humidifier, heated tube, approved converter and output path with the manufacturer and care provider. Adapter wattage is not measured therapy consumption. Do not change prescribed therapy to meet an estimate.

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: 2026-08-21. 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

18h 2m

Reserve: 15% · Battery health: 100% · Temperature loss: 0%

  • Usable energy: 721 Wh
  • Average load: 40 W

Higher reserve

15h 55m

Reserve: 25% · Battery health: 100% · Temperature loss: 0%

  • Usable energy: 636 Wh
  • Average load: 40 W

Cold or aged battery

13h 48m

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

  • Usable energy: 552 Wh
  • Average load: 40 W

Nearby station estimates

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

Goal Zero Yeti 1000X

18h 0m · 40 W · Reserve: 15%. Within the tracked power limits; compatibility still needs checking

Open estimate

EcoFlow DELTA 2

18h 30m · 40 W · Reserve: 15%. Within the tracked power limits; compatibility still needs checking

Open estimate

EcoFlow DELTA 3 Classic

18h 30m · 40 W · Reserve: 15%. 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.

Goal Zero Yeti 1000 LiFePO4: Estimated runtime?

18h 2m. Within the tracked power limits; compatibility still needs checking. CPAP without heated humidifier: 40 W · Duty cycle (%): 100% · Efficiency (%): 85% · Reserve kept unused (%): 15%. 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. CPAP values are editable planning assumptions, not a manufacturer-approved battery prescription. Check the exact device, pressure, humidifier, heated tube, approved converter and output path with the manufacturer and care provider. Adapter wattage is not measured therapy consumption. Do not change prescribed therapy to meet an estimate.