These requirements cover valve regulated or vented batteries that can be used as instrument batteries@ enclosed batteries@ emergency lighting and power batteries and uninterruptible power supply batteries of the valve regulated or vented type. A battery system composed of vented or valve regulated types with battery management controls and other battery system components@ and other chemistries or battery types are covered by the Standard for Batteries for Use in Stationary@ Vehicle Auxiliary Power and Light Electric Rail (LER) Applications@ UL 1973