Patent ID: 6657415
Filing Date: 2003-12-02
Classification: H02J

Abstract:
A hand-held information processing apparatus which, when an external power source is unconnected, supplies an electric power from an internal battery to a load and which, upon connection with said external power source, supplies an electric power from said external power source to said load and charges said internal battery, said apparatus comprising:a charging circuit capable of charging said battery by switchably setting a charging voltage to a high or low charging voltage; and a charging control unit connected to the charging circuit which variably sets the charging voltage of said internal battery in response to a trigger phenomenon to start charging of said internal battery, wherein the charging voltage is set to the low charging voltage except when the trigger phenomenon is the internal battery being installed and connection is made with the external power source via an AC adapter, or when the AC adapter is connected to the external power source and the internal battery.