<b>Definition:</b>An observation that is composed of a set of observations. These observations typically have a logical or practical grouping for generally accepted clinical or functional purposes, such as observations that are run together because of automation. A battery can define required and optional component observations and, in some cases, will define complex rules that determine whether or not a particular observation is made. BATTERY is a constraint on the Observation class in that it is understood to always be composed of component observations.<b>UsageNotes:</b>The focus in a BATTERY is that it is composed of individual observations. In request (RQO) mood, a battery is a request to perform the component observations. In event (EVN) mood a battery is a reporting of associated set of observation events. In definition mood a battery is the definition of the associated set of observations.<b>Examples:</b>Vital signs, Full blood count, Chemistry panel.

<p>**Description:**A battery specifies a set of observations. These observations typically have a logical or practical grouping for generally accepted clinical or functional purposes, such as observations that are run together because of automation. A battery can define required and optional components and, in some cases, will define complex rules that determine whether or not a particular observation is made.</p><b>Examples:</b>"Blood pressure", "Full blood count", "Chemistry panel".