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E lec tric a l S y stem
6 . 3 B a tteries & B a ttery S w itc hes
The 12 volt system includes three batteries located
in the center in-oor storage compartment and
a battery switch panel in the cockpit. There is a
battery switch for each engine, a switch for house
accessory circuits and an emergency battery par-
allel switch. Battery switches are identied by
red knobs and the parallel switch knob is yellow.
Automatic battery isolator/relays (DVSR) manage
the charging current for the engine and house
batteries. Whenever the engines are running,
the isolator/relays automatically sense the condi-
tion of each battery and direct available current
to the batteries that require charging. The port
and starboard engine batteries can be temporar-
ily connected in parallel by activating the EMERG
PARALLEL switch to provide additional starting
current for each engine.
When in port or at anchor, the port and starboard
engine battery switches should be OFF. Only the
battery switch that activates the house and ac-
cessory circuits should be ON. This will keep both
engine starting batteries in reserve for starting
the engines. If the house battery bank becomes
discharged to the point that accessories stop
operating properly, the engines can be started to
recharge the house batteries.
Notice:
Current is supplied to the automatic switches
for the bilge pumps when the batteries are
connectedandthebatteryswitchesareo.
Once the engines are running, the alternators
will charge each engine starting battery. As the
voltage in the battery raises to a preset level, the
automatic isolator relay between each engine bat-
tery and the house batteries will close and direct
charging current to the house batteries. The
engine starting and house batteries will continue
to be charged until the engines are shutdown and
the automatic relays open, isolating the house
battery bank from the engine batteries.
6 . 4 P a ra llel S w itc h & D ea d B a tteries
Dead Engine Starting Battery
In the event of a dead starting battery for an en-
gine, the engine starting batteries can be placed
in a temporary parallel conguration. This allows
you to start an engine from both engine starting
batteries combined.
To connect the batteries in parallel to start the
engines, make sure both engine battery switches
are on, then turn the EMERG PARALLEL switch on
and start each engine. Once the engines have
started and systems have stabilized, turn the
EMERG PARALLEL switch o.
Dead House Batteries
In the event of dead house batteries, there are a
couple options:
• If at the dock, simply plug in the shore power
and operate the battery charger to recharge
the house batteries.
• If at sea, start one or both engines. Once an
engine is running, the alternator will charge
the house batteries. Operating both engines
will recharge the house batteries much quicker.
The batteries will continue to be charged until
the engine or engines are shutdown, isolat-
ing the house battery bank from the engine
batteries.
Notice:
If a battery is fully discharged/dead for a
lengthy period, it may become permanently
damaged and will not be able to hold a
charge.
Battery Switch Panel, Battery Switches, Parallel Switch Main
Circuit Breakers & Accessory Breakers
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