Balmar's Digital Duo Charge eliminates the need for switches, combiners and isolators by delivering a controlled supply of charging current from the house battery bank to the starting battery. The Digital Duo Charge remains in a sleep mode whenever voltage at the house battery bank is lower than 13 (or 26) volts. When a charge source is present and voltage at the house battery bank rises above 13 (or 26) volts, the Digital Duo Charge creates a pathway for up to 30 amps of charging current to the starting battery. Adjusts for 12- or 24-volt output ranges.
Digital Duo Charge Wiring Diagram