Patent ID: 6515452
Filing Date: 2003-02-04
Classification: G01R,H02J

Abstract:
A remaining battery capacity corrector correcting an error in a calculated remaining battery capacity at a point near total exhaustion of said remaining battery capacity, the remaining battery capacity corrector comprising:a display displaying remaining battery capacity of said battery; a voltage detector detecting an output voltage of the battery; a current detector detecting an output current of the battery; a temperature detector detecting a temperature of the battery; a remaining battery capacity correction table storage unit storing a remaining battery capacity correction table representing a reference output voltage that is dependent on the output current and the temperature of the battery only at a predetermined point when said remaining battery capacity is near exhaustion; and a controller correcting a remaining battery capacity displayed on said display, said correction being based on the reference output voltage of the remaining battery capacity correction table, in the case that the detected output voltage of the battery is less than the reference output voltage in the remaining battery capacity correction table.