Rechargeable lithium-ion batteries may be transported on airplanes under specific conditions. In accordance with regulations established by the International Civil Aviation Organization (ICAO) and various national aviation authorities, passengers are permitted to carry lithium-ion or lithium-polymer batteries with a rated energy not exceeding 100 watt-hours (Wh). This generally corresponds to portable chargers with a capacity of up to 27000mAh in terms of milliampere-hours (mAh), allowing for the carriage of power banks such as a 20000mAh unit. For spare batteries that are not installed in devices, they must be carried in hand luggage, and precautions must be taken to prevent short circuits, such as individual packaging or insulation wrapping.
If the rated energy of a lithium battery exceeds 100Wh but does not exceed 160Wh, prior approval from the airline is necessary, and there may be restrictions on the quantity allowed. However, lithium batteries with a rated energy exceeding 160Wh are strictly prohibited from being transported on airplanes.
It is important to note that lithium batteries cannot be checked as luggage and must be carried personally. They should also be free from damage or deformation to ensure flight safety. When transporting lithium batteries on an airplane, it is advisable to adhere to the specific regulations of the airline and make preparations in advance for a smooth journey with the batteries.
In summary, rechargeable lithium-ion batteries can be transported on airplanes provided they comply with relevant regulations and conditions.