ATEX stands for ATmospheres EXplosible. This refers to the environments that these batteries may operate within and include areas that are considered to be hazardous, or potentially explosive, and include environments that are both gaseous (typically petrochemical) and dusty, such as flour mills, saw mills and some food processing plants. Specifically an ATEX battery or ATEX battery pack is specifically designed to conform to European Union directive 94/9/EC.