Circuit for preventing a rechargeable battery being excessively discharged

摘要

A circuit prevents excessive discharging of a rechargeable battery which is provided either in an electrical appliance or such that it can be removed from said electrical appliance. The circuit has a battery voltage detector, a comparator for comparing the battery voltage with a reference voltage and a controller for disconnecting the power consumption from a discharged battery when its voltage falls below the reference voltage. The discharged battery is electrically disconnected both from the load and from the comparator.