Battery pack and charger assembly

摘要

In order to enable a simple arrangement wherein only two terminals are provided on a battery pack for recharging a battery and sensing the battery temperature, the charger is arranged to intermittently interrupt a constant current supply used to recharge the battery and to apply, during the interruption, a predetermined low constant voltage to the two terminals so as to sample the voltage of a thermistor which is disposed in immediate proximity of the secondary battery.