Can You Bring Lithium Batteries (101 - 160 Wh) on a Plane?

⚖️ Why This Rule Exists: Aviation Cargo Fire Safety & Thermal Runaway Regulations (49 CFR § 175.10)

Lithium-ion batteries carry a risk of thermal runaway if crushed, short-circuited, or overheated. Because aircraft cargo fire suppression systems (Halon 1301) cannot reliably extinguish an uncontained lithium battery fire in the cargo hold, aviation safety regulations (FAA Pack Safe and ICAO Annex 18) require spare batteries and portable electronics to be transported in the passenger cabin where flight attendants can promptly deploy thermal containment bags.

Aviation security rules change depending on specific capacity, volume, or blade length. Check your exact variant:

Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.

Addresses passenger in-flight operational rules (e.g., vaping banned, device charging rules, consuming own alcohol prohibited) directly on the hub.

Operational airborne rules are governed under civil aviation flight safety regulations and carrier passenger conduct policies. Always obey cabin crew instructions and illuminated signs.

🔍 Security Checkpoint & X-Ray Screening Advice

In standard 2D X-ray lanes, remove laptops and large power banks from your bag and place them flat in a dedicated bin with nothing above or below them. In modern 3D CT scanner lanes, they may remain packed inside your carry-on bag.

Learn more about scanner differences and traveler rights in our Airport Security Screening Guide →

1. 1
   Placement Decision: Cabin: RESTRICTED | Checked Hold: NO
2. 2
   Packing & Protection: Calculate Watt-hours: (mAh × Volts) ÷ 1,000; batteries over 100 Wh must be carried in the cabin. Always verify specific airline carry-on size limits and pack delicate items securely to prevent baggage damage during transit.
3. 3
   Checkpoint Protocol: Keep packed securely inside carry-on luggage.
4. 4
   Airline & Authority Boundary: Check airline baggage policies for individual carry-on size and weight limits.