Undancer ® E Lectrical S Ystem; Batteries - Sea Ray 260 Sundancer Owner's Manual

260 s
The 12 volt direct current (DC) electrical system
(similar to that in your car or truck) derives its power
from the batteries. Batteries are kept charged by
the engine-driven alternator or the battery charger/
converter which must be powered by shore power.
The battery voltage is indicated by the voltmeter
on the helm panel (on the SmartCraft™ System
Tach) and on the main distribution panel located in
the cabin. The batteries supply power to the circuit
breakers on the main DC breaker panel. This panel
contains the breakers which supply power to the
subpanels and fuse blocks at the control station
and salon.
The negative terminal of each bank of batteries
is attached to the main DC negative bus which
in turn connects to the negative ground studs of
the propulsion engines and the generator. This
"negative ground system" is the approved system
for marine DC electrical systems.
Ask your dealer for a careful analysis of DC power
needs on your boat. It may be necessary to add
batteries or auxiliary charging methods to supply
adequate power for any additional accessories you
wish to install.
! DANGER
DO NOT USE JUMPER CABLES IN THE ENGINE
COMPARTMENT.
They can cause an explosion from sparks.
! DANGER
A battery will explode if a flame or spark
ignites the free hydrogen given off during
charging.
Never use an open flame or strike sparks in
the battery area.
1. b
aTTeries
The batteries installed in your boat have been
selected for their ability to furnish starting power
based on engine starting requirements, as well as
their ability to power the DC accessories attached
to the electrical system.
260 Sundancer
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The following tables describe the recommended
marine batteries to install in your boat. All batteries
in a battery bank should be of the same type, age,
and rating.
Standard:
Application Volts
12
BATTERY 1
12
BATTERY 2
The battery trays and battery cabling installed at
the manufacturing facility will indicate the quantity
of the batteries needed in your boat. Installing the
minimum size battery listed above will insure that
the battery bank will be sized appropriately.
COLD CRANKING AMPS (CCA) - a rating used in
the battery industry to classify a battery's ability to
start an engine in cold temperatures. The rating
is the number of amps a fully charged battery
can deliver at 0º Fahrenheit for 30 seconds, while
maintaining a voltage of at least 7.2 volts, for a 12
volt battery.
RESERVE CAPACITY (RC) - is a battery industry
rating, defining a battery's ability to power a vehicle
with out a charging device to replenish the battery.
The rating is the number of minutes a battery at
80º Fahrenheit can be discharged at 25 amps
and maintain a voltage of 10.5 volts for a 12 volt
battery.
BATTERY BANK - one or more batteries connected
together in series or parallel to provide the sufficient
Cold Cranking Amps or Reserve Capacity needed
to meet engine and calculated boat loads.
!
To prevent arcing or damage to the alternator,
always disconnect battery cables before doing any
work on the engine's electrical system.
ysTem
CCA RC QTY
800 180 2
800 180 1
CAUTION
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