To prevent the starter battery and the batteries supplying the lighting and bowthruster from draining each other in installations above a certain size they are kept separate. Mastervolt supplies a complete range of sophisticated battery isolators.As a result the charge system is more complicated than in installations with only one service battery: the alternator on the propulsion engine has to recharge all the battery sets individually and the same applies to the battery charger. Although it is possible to select the battery source manually, using a battery switch, much better results can be achieved by placing a diode splitter in the positive cable connection from the alternator to the various batteries. Almost all Mastervolt battery chargers come standard with two or three outputs. Only when two or more banks have to be charged with high current, a battery isolator has to be fitted (75A + 100A optional).

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