Schematic of the Simple 12 Volt Battery Charger Circuit. When the output is connected to the battery terminals, the meter shows a higher reading depending on the current flow into the battery. As the battery attains full charge, its terminal voltage rises to 13.8 volts and current through the meter ceases.
so we want to show you a simple circuit for the charger when the battery is fully charged, the charging automatically stopping,. this is a circuit of the auto cut off .
The following article explains a simple, versatile automatic lead acid battery charger circuit. The circuit will allow you to charge all types of lead acid battery right .