Multiple Batteries And Selector Switch - Volvo Penta 3.0GL-B Operator's Manual

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Maintenance
Battery Replacement
NOTE! When replacing your battery, read and under-
stand the information supplied with it before
you begin installation.
1.
Batteries must be heavy-duty and constructed for marine
use. They can be either vented/refillable, maintenance-free,
or deep-cycle with a CCA or MICA rating. Refer to Specifi-
cations pages for the correct battery sizes.
2.
Use bolts and nuts to secure battery cables to the battery
terminals. Do not use wing nuts to secure battery cables,
even if they were supplied with the battery.
3.
Loose battery connections can cause damage to the
engine's electrical system.
4.
Service electrical components only while the motor is not
running. Be careful when identifying positive and negative
battery cables and terminals. If you touch the wrong termi-
nal with a battery cable, even briefly, the motor's charging
system could be damaged.
WARNING!
The battery terminal connections must always be in-
sulated. If the battery mounting system does not cover
the connections, install protective covers. This will
help prevent shorting or arcing at the battery termi-
nals.
DANGER!
Fumes vented during battery charging may cause an
explosion.
Do not expose battery to electrical sparks or an open
flame.
Do not use jumper cables and a booster battery to
start engine.
If the battery compartment is not properly ventilated,
remove battery from boat to recharge.
If the battery has become discharged ("dead") for no
apparent reason, check all electrical system compo-
nents for malfunction, or for a switch left in the ON
position, before installing a recharged battery.
66
DANGER!
Failure to follow the safety precautions below may
result in electrical sparks igniting fuel vapors caus-
ing fire or explosion.
Operate the boat's bilge blower for at least 5 minutes.
Open the engine cover or hatch and check the boat's
bilge area for gasoline fumes. If any fumes can be
detected by smell, do not operate the boat until you
find the source, clean up the spill, and correct the
cause.
Do not connect cables to battery until all other elec-
trical connections have been made.
Make sure the ignition switch is OFF before remov-
ing or installing electrical equipment, checking any
electrical connections, or installing battery cables.

Multiple batteries and selector switch

See your Volvo Penta dealer for multiple battery installation
recommendations
If your boat is equipped with multiple batteries and a selector
switch, the engine should be operated with the selector switch
set to the ALL position. This will provide charging system out-
put to all batteries.
A battery isolator is recommended if batteries will be switched
for individual operation.
7741591 / 2003-12

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