A machine may comprise a security monitoring system and an engine start/stop system (ESS) where the security monitoring system is configured to detect an object proximate to the machine and classify characteristics of the object and the ESS is configured to turn on an engine of the machine based at least in part on the characteristics of the object. The machine may further comprise a battery to supply power for operation of the security monitoring system and a charging system to charge the battery while the engine is turned on. The ESS may monitor a charge level of the battery, determine whether the charge level is below a preselected threshold start level, and in response to determining that the charge level is below the preselected threshold start level, turn on the engine based at least in part on the characteristics of the object.