Potentially Explosive Atmospheres
Areas with potentially explosive atmospheres are often but not always posted and can include fueling areas such as below decks on boats, fuel or chemical transfer or storage facilities, or areas where the air contains chemicals or particles, such as grain dust, or metal powders.
When you are in such an area, turn off your mobile device, and do not remove, install, or charge batteries. In such areas, sparks can occur and cause an explosion or fire.
Symbol Key
Your battery, charger, or mobile device may contain symbols, defined as follows:
Symbol Definition
Important safety information follows.
Do not dispose of your battery or mobile device in a fire.
Your battery or mobile device may require recycling in accordance with local laws. Contact your local regulatory authorities for more information.
Do not throw your battery or mobile device in the trash.
Your mobile device contains an internal 
lithium ion battery.
Do not let your battery, charger, or mobile device get wet.
Listening at full volume to music or voice through a headset may damage your hearing.
Important Safety & Legal Information – 79