CPAP Power Station Runtime Calculator
Plan your backup power for sleep apnea therapy during outages, travel & camping
Global voltage support • 50+ CPAP models • Humidifier & heated tube settings
⚠️ Important Disclaimer:
This calculator provides estimates only based on typical CPAP specifications. Actual runtime varies based on equipment model, pressure settings, humidifier use, battery age, and temperature. Always verify calculations with your CPAP manual and test your setup before relying on it for sleep therapy. For life-sustaining medical equipment, consult your physician and equipment manufacturer for proper backup power requirements. We are not liable for equipment failure, sleep apnea complications, medical emergencies, or any damages resulting from use of this tool.
Calculate Your CPAP Runtime
Enter your power station capacity and CPAP settings to see how many nights you can run
Power Station Details
CPAP Machine Settings
How to Use This Calculator
- Enter your power station capacity in watt-hours (Wh). Check your power station specs or manual.
- Select your CPAP model from the dropdown, or enter power draw manually if not listed.
- Adjust settings for pressure, humidifier level, and heated tube to match your prescription.
- Enter hours of sleep you need per night (typically 7-9 hours).
- Optional: Add solar panels to see extended runtime with daytime recharging.
- Click Calculate to see how many nights your power station will run your CPAP.
- Review optimization tips to extend runtime during emergencies.
Expert Tips for CPAP Backup Power
Power Station Sizing
For 1 night: 300-500Wh minimum. For 2-3 nights: 1000-1500Wh. For a full week: 2000-3000Wh or add solar panels for recharging.
Reduce Humidifier
Humidifiers consume 15-30W. During emergencies, lower the setting or turn it off completely to extend runtime by 30-50%.
Disable Heated Tube
Heated tubes add ~10W. If not essential, disable it to save 15-20% more power during outages.
Solar Recharging
A 200W solar panel can recharge ~800-1200Wh per day, allowing indefinite CPAP use during extended outages.
Travel CPAPs
Travel CPAPs (like ResMed AirMini, Transcend) use only 6-12W — perfect for camping and can run 5-7 nights on a 500Wh station.
Medical Safety
Always maintain a 20% battery reserve. Test your setup before an emergency. Consider a backup power station for critical health needs.
Frequently Asked Questions
How long will a 1000Wh power station run my CPAP?
A typical CPAP with humidifier (50W) will run for approximately 14-16 hours on a 1000Wh power station, which is about 2 full nights of 8-hour sleep. Without humidifier (25W), you can get 3-4 nights.
What size power station do I need for a week of CPAP use?
For 7 nights (56 hours) with humidifier, you need approximately 2500-3000Wh. Alternatively, a 1000-1500Wh station with a 200W solar panel can provide indefinite runtime by recharging during the day.
Can I run my CPAP directly from a power station?
Yes! Most modern power stations have pure sine wave inverters suitable for CPAP machines. Simply plug your CPAP’s AC adapter into the power station’s AC outlet. For best efficiency, some CPAPs can use 12V DC adapters directly.
How does humidifier setting affect battery life?
Humidifiers can add 15-30W to power consumption. On high settings, this can reduce runtime by 40-50%. During emergencies, lower the humidifier or turn it off to double your runtime.
What’s the difference between 110V and 220V CPAP power draw?
The wattage (power consumption) remains the same regardless of voltage — a 50W CPAP uses 50W whether it’s 110V, 220V, or 240V. Your power station will provide the same runtime globally. However, ensure your power station has the correct outlet or use a voltage adapter.
Should I use AC or DC power for my CPAP?
DC power (12V) is 10-15% more efficient because it skips the inverter conversion. If your CPAP has a 12V DC input option, use a DC cable directly to the power station’s 12V port for longer runtime.
How do I extend CPAP runtime during long outages?
1) Lower or disable humidifier. 2) Disable heated tube. 3) Use EPR/pressure relief to reduce average pressure. 4) Add solar panels for daytime recharging. 5) Use a larger capacity power station (2000Wh+).
Can I charge the power station during the day while using CPAP at night?
Yes! This is the ideal setup for extended outages. A 200-400W solar panel can fully recharge most power stations during 5-6 hours of sunlight, providing continuous CPAP use for weeks or months.
What’s the best power station for CPAP use?
Look for: 1) 1000Wh+ capacity for multi-night use. 2) Pure sine wave inverter (most modern stations have this). 3) Solar charging capability. 4) LiFePO4 battery for longevity. Popular options: Jackery Explorer 1000, EcoFlow Delta series, Bluetti EB70/AC200, Anker 757.
Is it safe to use a power station for medical equipment like CPAP?
Yes, power stations with pure sine wave inverters are safe for CPAPs. However, always: 1) Test your setup before an emergency. 2) Keep the battery charged above 20%. 3) Have a backup plan (spare battery, generator, or second power station). 4) Consult your doctor about backup power for your specific medical needs.