This standard covers requirements including procedures to identify and manage contaminants and atmospheric conditions that can be present in telecommunications battery rooms and enclosures. Purpose The purpose of this standard is to highlight industry-wide requirements including methods and procedures for the control of battery room and enclosure environments. This includes adequate ventilation of battery?Cgenerated gases@ the dissipation of battery-generated heat@ the control of room and enclosure temperature@ the management of battery electrolyte spills@ and ?C in general ?C the control of any contaminates within the battery room or enclosure. The calculations and guidance pertain to lead-acid and nickel-cadmium battery systems that comprise the vast majority of stationary battery systems in the telecommunications industry. For alternative battery chemistries such as lithium@ sodium@ flow@ or other emerging technologies@ details on possible outgassing@ heat dissipation and electrolyte control should be obtained from the manufacturer. National and International Fire Codes provide some criteria for alternative battery technologies.