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© 2011 Skier’s Choice, Inc.
DUal baTTeRY oPTIon HooKUP
The dual battery option is designed to give you extra battery
power to run accessories, but at the same time give you a
safety feature not commonly found in a dual battery setup.
The Moomba Dual battery option features a Voltage Sensitive
relay which always monitors the engine starting battery so
that your engine will always restart.
We recommend that the selector switch always be set to “1”.
In the “1” position, the Voltage Sensitive Relay monitors the
engine starting battery, which will ensure that you have a fully
charged battery to start your boat. The “house” or accessory”
battery may become drained during a high discharge cycle
since it does not get charged until the starting battery is
fully charged.
In position “1” when the sensed battery (engine starting
battery) reaches 13.7 volts, the relay closes and parallels
both batteries. When this happens the LED light on Voltage
Sensitive Relay comes on.
In position “2” the sensed battery is the accessory battery. We
do not recommend using this position since it can cause the
starting battery to drain, which would not allow the engine
battery to have enough power to restart your boat.
In position “both”, the batteries are paralleled and in a high
discharge cycle, both batteries can become drained, which
would not allow the engine battery to have enough power
to restart your boat.
NOTE: It is recommended that you fully recharge your
batteries using a battery charger periodically or after a
session of high discharge (lots of accessories running for
an extended period).
NOTE: It is possible with this system for accessories to shut
down when the engine is running due to the accessory
battery draining down. This is a safety feature. This
system monitors the starting battery and will sacrifice
the accessory battery so that you are not stranded on the
water with a weak starting battery.
NOTE: We highly recommend using high quality “Dual-
Purpose Batteries” in both the starting and house
position.
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