The Cyrix Battery Combiner is a microprocessor controlled heavy duty relay
that automatically connects batteries in parallel when one of them has
reached a pre-set voltage (indicating that the battery is being charged),
and disconnects when the voltage decreases below float level (indicating
that one or more batteries are being discharged). Cyrix Battery Combiners
are an excellent replacement for diode isolators. The main feature is that
there is virtually no voltage loss so that the output voltage of alternators
or battery chargers does not need to be increased.