CHARGING CONTROL METHOD AND CHARGING CONTROLLER

摘要

A charging controller arranged such that the output power is taken out from between a charging current detecting resistor 3 and an FET 4 and only a charging current flows through a current detecting circuit 5. Since a working current does not flow through the current detecting circuit 5 even if operation takes place on the electronic apparatus body side during charging operation of a battery 1, only the charging current can be detected at all times. When power is supplied only through the battery 1 without using any external power supply 2, opposite ends of the charging current detecting resistor 3 are short-circuited. Power loss through the charging current detecting resistor 3 can thereby be eliminated and shortening of battery life can be avoided. Consequently, only the charging current can be detected at all times in the charging control of the battery.