A method and apparatus for charging a rechargeable battery (110) that
takes into account the use patterns of the particular battery. A user may
only discharge the battery a little and recharge it frequently which is a
low capacity high life cycle use pattern, or discharge the battery almost
completely and place the battery on charge less frequently indicating a
high capacity low life cycle use pattern. Herein, a battery is installed
in an electronic device wherein a battery discharge determination circuit
and a discharge determination algorithm determine the discharge level of
the battery when a charging circuit is placed on the battery. The
measurement algorithm determines from the rechargeable battery discharge
level measurement how to recharge the rechargeable battery. The
measurement algorithm may also determine how to recharge the rechargeable
battery based on a plurality of previous measurements stored either in
the electronic device or the battery.