Patent ID: 7365517

Claim:
A remaining battery capacity indicating apparatus for detecting a remaining capacity of a charge and discharge battery serving as a power supply for supplying a voltage to an electronic device, comprising: an end voltage setting unit operable to set a device-side end voltage which ends operations of the electronic device; an accumulated value setting unit operable to set an accumulated value indicative of a remaining capacity of the battery, the accumulated value being set in a fully charged state of the battery so that the accumulated value reaches zero when a voltage in the battery is the device-side end voltage; a determining unit operable to determine whether a battery-side end voltage which ends discharges from the battery corresponds to the device-side end voltage; a correcting unit operable to correct the accumulated value in response to the device-side end voltage if the battery-side end voltage does not correspond to the device-side end voltage; a calculating unit operable to calculate a remaining capacity of the battery corresponding to the device-side end voltage based on the corrected accumulated value; and a display unit operable to display the calculated remaining capacity of the battery.