Ah, the battery. This is where it gets spicy. If your CPAP has a lithium-ion battery, it’s totally fine in your carry-on. But check the watt-hours (Wh) label. If it’s over 100 Wh, you might need airline approval.
Most travel batteries are under 100 Wh, but check anyway. And if you’re using a huge external battery pack the size of a cinderblock, call the airline. They’ll probably high-five you for being prepared. Or they’ll ask you to check it. Don’t risk it—call ahead.
Traveling with cpap on airplane 60 photos - Morilly.com
International Flights: The Wild Card
Flying overseas? The rules are mostly the same, but some countries are picky. The UK and EU treat CPAPs like royalty. However, if you’re going to, say, Japan, you might need a note from your doctor. A simple one-line note: “This person needs air to sleep. Please don’t lose it.”
Pro tip: Always bring a prescription or a letter. It’s overkill, but it makes you look like a medical professional. Plus, it’s great for getting out of traffic tickets. (Just kidding. But try it.)
