To enable avoiding overheating of a switching element for charge control by preventing continuous charging using a large current and high speed chattering, when charging error of a secondary battery is made with a power source for charge whose charging voltage and current are extremely large.

In this protection circuit device, an FET 11 for charging control is inserted in a charging path between a secondary battery 4 and a power source 5 for charging. On the basis of the output of a voltage comparator 14 for abnormal charging detection, which compares a battery voltage with a charging inhibit reference voltage, the FET 11 is turned off when the battery voltage is higher than the charging inhibiting reference voltage. When the voltage comparator 14 is changed from an abnormal charging detecting state to a state where an abnormal charging is not detected in order to prevent long time charging using an abnormal charging current and chattering, the FET 11 is turned to on-state by a fall time delay circuit 15 via a polarity inversion circuit 16 and an FET drive circuit 17, after a specified delay time is elapsed.