A method and system for managing power of a portable device is disclosed. The portable devices has a plurality device components that has controllable power settings. The device has a plurality of power profiles, each power profile referencing a list of the available device components that are configured for adequate power needs. Set of rules are then defined having a criterion for executing the plurality of power profiles, where the criterion is based on a device input. Once the rules and power profiles are created, the device inputs are monitored to determine if there is a match. If the criteria in the rules are matched, the corresponding power profile is executed to maximize battery life.