US Patent 8054192 Activity pattern based battery charging alerts for mobile devices

A method for providing activity pattern based battery charging alerts for mobile devices, the method includes: monitoring usage patterns of a mobile device; determining periods of activity and inactivity for the mobile device's usage; creating an activity log detailing the determined periods of activity and inactivity; monitoring levels of available battery charge for the mobile device; correlating the levels of available battery charge with the activity log; and generating a charging advisory alert in response to at least one of: an available battery charge dropping below a threshold value prior to a period of device inactivity, or toward the end of a period of activity.