The drone itself is rarely the problem at airport security; the batteries are. Drone batteries are lithium ion or lithium polymer, and airlines and the FAA have specific rules for carrying them. This guide explains how to read a battery label, how the FAA’s limits work and how to pack batteries for a flight.
Key takeaways
- Spare lithium batteries go in carry-on baggage only, with terminals protected.
- The FAA limit is 100 watt-hours per battery, with airline approval needed for 101 to 160 watt-hours (maximum two spares).
- Damaged or swollen batteries must not be carried on an aircraft.
Read the watt-hour rating
Drone batteries usually print their capacity in watt-hours (Wh) on the label. If only milliamp-hours (mAh) and voltage (V) are shown, you can estimate: multiply mAh by volts and divide by 1,000. For example, a 3,000 mAh battery at 15 volts is about 45 Wh. Most small and mid-size drone batteries fall well under 100 Wh.
What the FAA says
According to the FAA’s PackSafe guidance for lithium batteries:
- Spare (uninstalled) lithium ion batteries must be carried in carry-on baggage only.
- If a carry-on bag is checked at the gate, spare batteries must be removed and kept with the passenger in the cabin.
- Battery terminals must be protected from short circuit.
- Lithium ion batteries are limited to 100 Wh per battery.
- With airline approval, passengers may carry up to two spare larger batteries from 101 to 160 Wh.
- Damaged or recalled batteries must not be carried.
The FAA also notes that many airlines set stricter quantity and watt-hour limits, so check your airline before you travel.
Protecting terminals
The FAA lists several ways to protect terminals: keep batteries in retail packaging, cover terminals with tape, use a battery case or sleeve, or put each battery in a plastic bag or protective pouch. Many drone battery hubs and cases also keep terminals covered. The goal is to stop metal from touching the contacts.
The battery in the drone
A battery installed in the drone counts as a battery in a device. Some airlines ask travelers to remove drone batteries and carry them separately. Check the airline’s rules before packing, and be ready to remove the battery at security if asked.
Battery rules at a glance
| Battery | FAA baseline |
|---|---|
| Up to 100 Wh spare | Carry-on only, terminals protected |
| 101 to 160 Wh spare | Airline approval, up to two spares |
| Over 160 Wh | Generally not allowed on passenger aircraft |
| Damaged or swollen | Not allowed |
Charge level for travel
Some airlines and manufacturers recommend traveling with batteries partly charged rather than full. Many drone batteries also have a storage mode that discharges to a safer level after some days. Follow the manufacturer’s advice and the airline’s guidance.
Packing checklist
- Check the Wh rating on every battery.
- Inspect each battery for swelling, dents or damage.
- Protect terminals.
- Pack all spares in your carry-on bag.
- Check the airline’s specific limits.
- Carry the charger in your bag too.
Tip: Take a clear photo of each battery label before the trip. If security asks about capacity and the label is worn, you can show the rating quickly.
Which drone fits frequent flyers
If you fly on airlines often, a drone with smaller batteries clearly marked in watt-hours is easier to travel with. Before buying, check the battery’s rating and how many spares you plan to carry. Larger drones with batteries over 100 Wh need airline approval and are limited in number. See Buying a Drone for Travel: Weight, Batteries and Where You Can Fly.
What happens at security
Security staff may ask you to take the drone and batteries out of your bag for screening, much like a laptop. Pack them near the top so they are easy to remove. If a battery lacks a visible watt-hour rating, you may be asked about it, so the label photo in the tip above is useful. Remember that the final decision rests with the airline and security staff on the day.
Common mistakes
- Putting spare batteries in checked luggage.
- Carrying loose batteries with exposed terminals.
- Traveling with a swollen battery.
- Assuming all airlines follow only the FAA baseline.
Frequently asked questions
Can drone batteries go in checked luggage?
Spare lithium batteries cannot. They must be in carry-on bags under FAA guidance.
How many drone batteries can I bring?
For batteries up to 100 Wh the FAA sets no general quantity limit for personal use, but airlines may. For 101 to 160 Wh, the limit is two spares with airline approval.
What if my battery is swollen?
Do not fly with it or take it on a plane. Recycle it safely.
For charging and storage at home, see Drone Batteries and Chargers: What to Buy and How to Look After Them.