DANGEROUS GOODS

Measurement:

Wh = Watt hour = Ampere Hour x Voltage

Electronic devices (e.g. laptop computers, cellular phones, cameras, camcorders and so on) or portable medical electronic devices containing lithium metal batteries not exceeding 2 grams or lithium ion batteries not exceeding 100 Wh can be carried both in carry-on baggage or checked-in baggage. All spare batteries must be put in carry-on baggage.

For electronic devices or portable medical electronic devices containing lithium metal batteries exceeding 2 grams but not exceeding 8 grams or lithium ion batteries exceeding 100Wh but not exceeding 160 Wh, OR if for health reasons or other special reasons mobility aids (e.g. wheelchairs) that are powered by lithium batteries must be carried during the travel, passengers must make the request to the airline. With the approval of the airline, passengers can then follow the instructions given by the airline to put the devices in carry-on baggage or checked-in baggage.  However, all spare batteries must still be put in carry-on baggage.

Dangerous goods are articles or substances that are capable of posing a risk to health, safety, property or the environment when transported by air. There are many everyday items which seem harmless but can be a threat to the safety of passengers and crew when they are brought on an aircraft; hence they are often forbidden to be carried by passengers either in the aircraft cabin or their baggage. These dangerous goods are classified by International Civil Aviation Organization (ICAO) into 9 classes as follows:

Class 1 Explosives
Class 2 Gases
Class 3 Flammable liquids
Class 4 Flammable solids; substances liable to spontaneous combustion; substances in which, contact with water, emit flammable gas
Class 5 Oxidizing substances and organic peroxides
Class 6 Toxic and infectious substances
Class 7 Radioactive materials
Class 8 Corrosive substances
Class 9 Miscellaneous dangerous goods (e.g. lithium batteries) 

Please click  to review the full terms of the regulation, or refer to the "Security Control Articles" session for details."