Quick answer: Start with your exact PAP model and normal nightly settings, then verify compatibility and expected runtime before relying on a backup-power setup.
Prepare while the lights are still on
Before a winter storm, charge the battery using its supported charger and keep it indoors within the temperature range in the manual. Check the local forecast and your utility’s outage information so you can prepare before travel or charging becomes difficult.
Test one normal winter night
Connect the exact machine, mask, tubing, and included matching cable you will use. Keep your normal pressure and comfort settings, run a full overnight test, and record the remaining charge. If that reserve is too small for the expected outage, arrange an additional charged battery or access to reliable indoor power.
Keep the bedside kit together
- Battery and matching CPAP cable.
- Supported charging adapter and the machine’s normal power adapter.
- Flashlight, phone, and equipment-provider contact.
- A written record of the connection and overnight test.
During an outage
Use the tested connection and check that the CPAP is running. Keep the equipment dry and ventilated, away from bedding and direct heat. Do not charge a cold battery outside its permitted charging range. If backup power is not sufficient, use the contingency arrangement agreed with your care team rather than improvising wiring or pressure changes.
After power returns
Inspect and recharge the kit as directed, replace any damaged cable, and update your plan using the runtime you actually observed. See the power-outage guide for broader preparation and the manual library for model-specific limits.
