⚡ CPAP Battery Runtime Calculator
Select your machine and settings to see how long each battery will last
All estimates use conservative calculations (75% efficiency, no over-promise). Actual runtime may vary based on altitude, temperature, mask leakage, and machine firmware. Always test at home before travel.
① Your CPAP Machine
② Usage Settings
Pressure Setting
10 cmH₂O
Heated Humidifier
AirMini uses HumidX — waterless
Significantly reduces runtime
⚠ High power draw: Humidifier + heated tube adds ~30–45W. Runtime will be reduced by up to 65%. We strongly recommend turning off humidification when running on battery.
Hours of sleep per night
8 hrs
Estimated Battery Runtime
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Select your CPAP machine above
to see runtime estimates
How we calculate:
Runtime = (Battery capacity × 75% efficiency) ÷ estimated device wattage.
Device wattage = base consumption + pressure adjustment + humidifier load (if enabled).
Conservative values are used throughout — real-world results may be equal to or better than shown. Nights = total hours ÷ your set sleep duration.
Device wattage = base consumption + pressure adjustment + humidifier load (if enabled).
Conservative values are used throughout — real-world results may be equal to or better than shown. Nights = total hours ÷ your set sleep duration.