Battery charger

摘要

A battery charger with an SCR providing high charging current to a battery until a predetermined high voltage level is sensed. When the voltage sensed reduces to a float voltage minimum level, a trickle charge current is supplied through another SCR until a float voltage maximum level is sensed, which suspends trickle charge current until the voltage again reduces to the float voltage minimum level. When a load reduces the battery voltage so that the sensed voltage is reduced to a predetermined low level below the float voltage minimum level, then the high charging current SCR is again gated on to charge the battery.