The circuit is used for 12v battery charge. The voltage indicator is used as a regulated power supply and the LM3914 integration is used for the voltage cut when the battery is full. The additional auxiliary circuit for disconnecting the voltage when the battery is full is connected to the # 10 foot of the LM3914.
Battery charging schematic circuit diagram
primarily LM317 output 5k pot. ( 13.8v … 14.4v ) 10k pot in the LM3914. When the last LED is 13.8v or 14.4v, it is set to light. When LED 10 lights up, BC547 transistor is triggered and relay contacts are pulled. LM317 gives 1 amp power LM350 for 3 amperes You can use LM338 for 5 amperes ..
Images of the battery charger