
89
Electrical System
6.10 DC Power Management
Modern outboard powered boats are typically
equipped with a full array of electronics, fuel in-
jected engines, spreader lights, stereo amplifiers,
or other accessories that consume a significant
amount of DC electrical power. All outboard en-
gine charging systems are designed to provide
maximum electrical output at or above cruising
RPM. The electrical output from the charging sys-
tem is considerably less at idle or trolling speeds.
Depending on the optional equipment and elec-
tronics installed on your boat, there may be times
when the charging systems on your engines will
not be able to meet the DC electrical power de-
mand if too many accessories are activated while
the boat is operating at idle or trolling speeds.
Consequently, POWER MANAGEMENT PRACTICES
may need to observed at slow speeds.
The house battery system in your Scout is de-
signed to provide several hours of reserve ca-
pacity, which is adequate for most situations.
However, you should be aware of the load each of
your DC accessories draw and make sure you don’t
overload the capacity of the charging system for
extended periods while operating the boat below
cruising speed. Always monitor the volt meters
while operating at slow speeds and turn off unnec
-
essary equipment that draw high amperage loads
if the volt meters indicate that battery voltage is
below 12 volts. If necessary, reduce the electri-
cal load by turning off or alternating the use of
high draw DC accessories such as the radar units,
refrigeration, stereo, spreader lights, etc.
If the house battery system that powers the elec-
tronics and accessories on your boat becomes
critically discharged while underway at low speeds
or trolling, make sure that you turn off all unnec
-
essary DC equipment and run the engines at an
RPM that will provide a reading of at least 13 volts
on the volt meters to recharge the house battery.
Proper DC power management will prevent low
voltage that can cause critical navigation equip-
ment to become erratic or shutdown unexpect-
edly. Additionally, sound power management
practices increase the life of your batteries and
engine charging systems. You should contact your
dealer if you have any questions regarding DC
power management or the DC electrical system
on your boat.
https://www.boat-manuals.com/
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