System for charging a house battery bank from an alternator

A system for charging a house battery bank in a vehicle, the system comprising:

• a starter battery junction;
• an alternator powered by an engine and configured to output power to the starter battery junction;
• a merge solenoid electrically coupled to the starter battery junction and the house battery bank;
• a DC to DC charger configured to receive power from the alternator via the starter battery junction;
• a disconnect solenoid electrically coupled to a starter battery and the starter battery junction;
• a voltage monitor electrically connected to the merge solenoid via a voltage sense wire;
• and
• a controller monitor;
• wherein the voltage monitor is configured to:
• in response to detecting a signal from an oil pressure switch and determining that a voltage sensed via the voltage sense wire is within a predetermined range, generate a merge signal to indicate an electrical connection between the house battery bank and at least one of the starter battery or the alternator, and transmit the generated merge signal to the controller monitor;
• and
• wherein the controller monitor is configured to:
• in response to detecting an ignition on signal and the merge signal generated by the voltage monitor:
• adjust a disconnect signal to cause the disconnect solenoid to disconnect the starter battery from the starter battery junction that is receiving power from the alternator;
• and
• adjust a remote On/Off signal generated by the controller monitor to turn the DC to DC charger on and thereby cause the DC to DC charger to provide power to the starter battery.