2026 CPAP Battery Travel Guide: FAA & International Rules

This post was updated with the latest information in January 2026.

In 2026, traveling with a CPAP machine is easier than ever, but traveling with the lithium-ion batteries that power them requires careful planning. With updated FAA safety protocols and stricter international enforcement, knowing the "rules of the road" is the difference between a smooth flight and having your expensive battery confiscated at the gate.

Under no circumstances can a spare CPAP battery be placed in checked luggage. In 2026, the FAA and international civil aviation authorities (ICAO) have tightened these rules due to the risk of "thermal runaway" (battery fires).

• Why? If a battery malfunctions in the cabin, the crew is trained to extinguish it. If it happens in the cargo hold, it can be catastrophic.

• The Check-In Exception: While the machine itself can be checked, the battery must be removed and kept with you in the cabin.

Not all batteries are created equal in the eyes of the law. As of 2026, the FAA uses Watt-hours (Wh) to determine eligibility:

• Under 100 Wh: Most standard CPAP batteries (like the Medistrom Pilot-24 Lite) fall under this limit. You can carry an unlimited number of these for personal use.

• 101–160 Wh: These are "Large Lithium Ion" batteries. Most airlines allow up to two of these per passenger, but many now require prior airline approval.

• Over 160 Wh: These are strictly prohibited on passenger aircraft.

Crossing borders adds a layer of complexity. While the TSA is familiar with CPAP equipment, international security in Europe, Asia, and Australia may have different "Medical Device" exemptions.

• The 150% Rule: Many international carriers (like Virgin Atlantic and Lufthansa) require you to have enough battery power for 150% of your flight time if you plan to use the machine in-flight. For an 8-hour flight, you need 12 hours of battery life.

• The 30% Charge Rule: As of January 1, 2026, new IATA regulations require batteries "packed with equipment" to be shipped/transported at a State of Charge (SoC) not exceeding 30%. While this primarily affects retailers, some airlines may ask you to ensure your spare batteries aren't at 100% capacity for safety during long-haul transits.

• Plug Adapters: Remember, even if you have a battery, you’ll need a plug adapter to recharge it at your hotel. Most CPAP batteries are dual-voltage (100V-240V), but the physical plug shape changes by country.

Use a "Medical Equipment" luggage tag. It signals to TSA that your bag contains sensitive gear.

Place your battery in a clear plastic bag. It keeps it clean and makes the X-ray technician's job easier.

To prevent short circuits, cover the battery's metal contact points with a small piece of electrical tape.

Keep a digital or physical copy of your CPAP Prescription and your Manufacturer’s FAA Compliance Letter in the outside pocket of your CPAP bag. While rarely asked for by TSA agents (who see hundreds of machines a day), they are invaluable if a gate agent or international security officer questions your equipment.

Never travel with water in your humidifier chamber. Even a small amount of residual water can leak into the machine's internal motor during the turbulence of the X-ray belt, potentially voiding your warranty or causing a short circuit.

The CPAP Shop has been a trusted retailer of CPAP products since 2004. We offer the top-rated CPAP machines, masks, supplies and more on the market so CPAP therapy users can get the most options and best treatment possible. For assistance purchasing items or to learn more about any of our products, give our expert staff a call at 866-414-9700.

Leaving for a trip and want to learn more about traveling with CPAP? Read this comprehensive guide to using CPAP therapy while traveling.