Short answer: Do not treat “15 to 20 vapes” as an official allowance. The FAA PackSafe guidance requires electronic smoking devices and spare lithium batteries in carry-on baggage or on your person, with measures against activation and short circuits. Battery size, personal-use context, airline policies and destination laws also matter.
What the published rule covers
Each lithium-ion battery must meet the applicable watt-hour limit. Spare batteries need individual protection from short circuits. Devices must be kept out of checked baggage; do not use or charge them on the aircraft. The FAA’s passenger battery guide explains capacity limits and personal-use considerations.
Before you travel
- Check the airline’s current policy for your itinerary.
- Check the destination’s rules on possession or importation, especially internationally.
- Keep devices and spare cells protected, and remove them from a carry-on bag if the bag is gate-checked.
The earlier article’s asserted numerical limit was unsupported and has been removed.
Frequently asked questions
Does TSA allow exactly 20 disposable vapes?
Do not rely on that number. Check current FAA, TSA, airline and destination rules for your situation.
Sources: FAA pages linked above. Reviewed September 2026.