Victron Energy Cyrix 12/24V 120A

The Cyrix battery combiner is a relay that connects two battery banks in parallel when one battery is being charged. The Cyrix detects when the voltage rises, indicating that charging current is present, and connects the batteries. It also isolates the batteries when the voltage drops. The Cyrix is ??microprocessor controlled and also takes into account the voltage trend before connecting/isolating. 13-13.8V is required for connection and 11-12.8V for isolation, depending on the voltage development.

Cyrix ensures that all batteries are charged when, for example, the generator is running and also ensures that you do not disconnect the starter battery when there is no charging current. If the starter battery has been disconnected for some other reason, it is possible to connect all batteries for jump starting.

This relay does not cause voltage drop and is an excellent alternative to diode isolators.