battery isolators

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. 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).

Charging is fully automatic once you have fitted a battery isolator or a diode splitter to isolate the current. As there are no moveable parts there is no wear. The (average) voltage drop for 0.7V can be compensated for in different ways:

1. In Mastervolt appliances with sense wires (pos. and neg.), the voltage drop is automatically compensated for. 

2. If the charger is not fitted with the sense wires, a jumper or dip switch setting will have to be made to increase the voltage. 

3. Mastervolt alternators equipped with the Alpha Pro charge regulator can be adjusted to the correct charge voltage so that the voltage drop is compensated for. 

More information in the manual (160kB pdf) and in the datasheet (650 kB pdf)

A Battery Mate can be installed in existing or new systems to improve the charging process. This appliance was designed to charge up to three separate battery sets at the same time. The Battery Mate is compatible with any type of alternator. Conventional diode splitters will create a voltage drop of 0.7 to 1.5 DC, depending on the charge current, resulting in a very incomplete charge process. The Battery Mate ensures that the batteries are quickly and fully charged without requiring adjustment of the alternator. 

With this system you can keep the standard alternator while improving the charge process dramatically. A battery charger and/or alternator is connected to the input side on the Battery Mate, while two or three batteries are connected to the output side. Each of these batteries can then be charged to a maximum of 160A at 12V or 24V. See also brief specifications below.

More information in the manual (230kB pdf) and in the datasheet (650 kB pdf)

Modell	Battery Mate 1602	Battery Mate 1603
Max. current alternator	160A	160A
Max. current  charger	160A	160A
Battery banks	2	3
Dimensions	207 x 140 x 80 mm	207 x 140 x 80 mm
Weight	1000g	1000g
	order here	order here

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