Patent ID: 8330427

Claim:
A charge control circuit that controls a charging section which charges a secondary battery by supplying a charging current to the secondary battery, the charge control circuit comprising: a voltage detection section which detects a terminal voltage of the secondary battery; a primary charge processing section which performs a charge processing of acquiring, as a first terminal voltage, a terminal voltage detected by the voltage detection section while causing the charging section to charge the secondary battery; a charging suspend voltage acquiring section which causes the charging section to suspend the charge after the first terminal voltage has been acquired by the primary charge processing section, and acquires, as a second terminal voltage, a terminal voltage detected by the voltage detection section in a state that the charge is suspended; and a charging end determining section which determines whether or not the charge of the secondary battery is to be terminated, by comparing a difference between the first terminal voltage acquired by the primary'charge processing section and the second terminal voltage acquired by the charging suspend voltage acquiring section with a reference voltage which is predetermined considering a characteristic of an amount of decrease in the terminal voltage during a predetermined time that has elapsed since suspending the charge of the secondary battery.