The Durite split charge relay splits the charge from one alternator between the starter and the auxiliary/leisure battery. The Durite relay has an extra terminal that isolates the fridge supply separately.
The Hella split charge relay splits the charge from one alternator between the starter and the auxiliary/leisure battery and/or a fridge.
The Durite voltage sensitive split charge relay is the simplest to fit as it only needs to be wired from the starter battery to the leisure battery.
For more split charge systems and options see our battery to battery chargers.
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