Description

Dual Battery Management System – a microprocessor-controlled split-charge controller for a two-battery electrical setup.

It manages a starter battery and a separate auxiliary battery: while the engine runs the two are linked through a heavy-duty power relay so both charge from the alternator, and when the engine stops they are automatically separated so auxiliary loads cannot drain the starter battery. A manual override links the batteries on demand – for load sharing when jump starting or running high-current equipment such as a winch, inverter or compressor – before reverting to automatic operation.

The system supports auxiliary equipment such as fridge-freezers, inverters and lighting. It is supplied with a wiring loom (with sealed connector and battery/crimp terminals) and a dash-mounted battery monitor that displays the charge level of both batteries and the alternator charging voltage.