Regarding bringing mobile batteries and similar items onto an aircraft (effective April 24, 2026)
Lithium-ion batteries used in mobile power banks and similar devices may overheat or catch fire due to external impacts or overcharging.
In accordance with International Civil Aviation Organization (ICAO) standards, we ask for your understanding and cooperation regarding the following rules in order to prevent accidents on board aircraft.
[Important] Rules to follow
- Prohibited from checked baggage: You cannot check this item in your suitcase or other luggage as Check-in luggage. Please carry it on board.
- Number of items allowed: A maximum of 2 items per person. (Only items with a rated capacity of 160Wh or less per item are permitted.)
- Insulation: To prevent short circuits, protect the terminals with tape or place them in individual plastic bags.
- Prohibited Use on Board: Charging mobile batteries from the aircraft's power outlets is prohibited. Also, do not use mobile batteries to charge electronic devices such as smartphones.
Please check the label on your battery. If the rated capacity is not listed, you can check it using the following formula.
Rated capacity (Wh) = Rated capacity (mAh) × Rated voltage (V) ÷ 1000
As a guideline: Most typical mobile batteries (capacity of around 5,000 to 20,000 mAh) are under 100 Wh, which is within the limit for bringing them into the park (160 Wh).
*Regulations may vary depending on the airline. Please check the website of your airline for details.
Reference information (external links)
(Ministry of Land, Infrastructure, Transport and Tourism) New rules regarding carrying mobile batteries on board airplanes
(Scheduled Airlines Association) Changes to the handling of mobile batteries on board aircraft