The present application is directed toward a method and system for conserving battery power in low power systems. According to one aspect of the invention, a battery (88) with a low power processor (110) is used to shut off the monitor circuit (120) that determines the charge remaining on a battery (88). Periodically, the low power processor (110) will wake-up and power on the monitor circuit (120) to determine the remaining charge of the battery (88). According to another aspect of the invention, there is a safety override circuit. The safety override circuit is a fail-safe that allows charge to flow from the battery (88) when there is a fault with the low power processor (110), for example if the low power processor (110) fails to wake-up.
