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3 Lithium battery
In accordance with the laws and regulations set forth in the International Civil Aviation Organization's document on the safe transport of dangerous goods, as well as the requirements outlined in the Provisions of the Civil Aviation Administration of China on the Administration of Transport of Dangerous Goods By Air, when carrying lithium-powered electronic devices on board such as mobile phones, laptops, or cameras, please comply with the following safety tips for air travel:

I.Please bear in mind:
Damaged or recalled lithium batteries are forbidden from being carried on;
Lithium batteries or power banks where the power rating is not indicated or is unclear are forbidden from being carried on;
Purchase only standardized lithium batteries or power banks!

II.Spare lithium batteries and power banks
Spare lithium batteries and power banks can only be placed in carry-on baggage.
Power banks should be powered off for the entire duration of a flight. Power banks cannot be used to charge devices while on the plane. You may not charge a power bank on the plane or use any of its other functions.

III.You do not need to declare lithium battery-powered devices or spare lithium batteries that do not exceed 100 Wh (watt-hours). A reasonable amount of spare lithium batteries can be placed only in carry-on baggage for boarding.
(Note regarding the power rating of lithium batteries for commonly used portable electronic devices:

-most mobile phones have a rating of 3-10 Wh;
-most single-lens reflex cameras have a rating of 10-20 Wh;
-most portable cameras have a rating of 20-40 Wh;
-most tablets and laptops have a rating of 30-100 Wh;
-most devices do not exceed 100 Wh.)

IV.Lithium battery devices or spare lithium batteries that exceed 100 Wh but are no higher than 160 Wh shall be declared to China Southern Airlines for approval. Under this guideline, you are limited to 2 spare lithium batteries in your carry-on.

V.It is forbidden to carry on lithium battery-powered devices or spare lithium batteries that exceed 160 Wh (powered wheelchairs that use lithium batteries are allowed).

VI.Safeguard measures for carrying on spare lithium batteries
To prevent explosions or combustion due to scratches, impacts, or short-circuiting, place lithium batteries individually in their original retail packaging, plastic bags, or in protective cases, or cover any exposed electrodes with tape.