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Section 6: Electrical System
tow vehicle engine is operating with the RV connected, the tow vehicle charging system will
charge both batteries.
Replacement and maintenance
Some equipment in your RV will draw small amounts of current even when turned OFF. To
prevent the auxiliary battery from being discharged when your RV is not connected to shore
line power, disconnect the auxiliary battery negative cable at the battery. During storage, it is
important to check the voltage monthly and recharge the auxiliary battery as needed. If you
remove the auxiliary battery from your RV, store it in a dry, cool area per the manufacturer's
instructions.
When it is time to replace the auxiliary battery, Group 27 or Group 31 true deep cycle
batteries are recommended to increase run time of electrical components while dry
camping (operating solely on battery power).
Do not reverse the positive and negative battery cables (doing so will blow the reverse polar-
ity fuse(s) that protect the power converter).
For more information
Please contact the battery manufacturer for additional information on the auxiliary batteries.
Battery Isolator For Your Tow Vehicle (customer supplied)
You may want to consider the installation of a battery isolator on your tow vehicle as a
convenience feature:
It receives current from the tow vehicle alternator and controls distribution of energy to both
the RV auxiliary battery and the tow vehicle battery.
It serves as a check valve to prevent energy from being drawn from your tow vehicle chassis
battery (so you can start your tow vehicle engine).
Your dealer can assist you with the selection, purchase and installation.
DC to DC Power Converter (customer supplied)
If installing lithium batteries in the recreation vehicle, install a DC to DC power converter
between the tow vehicle battery charge line and the trailer lithium battery(s) to prevent
lithium battery damage.
Battery Disconnect Switch (if so equipped)
The Battery Disconnect switch is typically located in an
enclosed exterior compartment. The style of the discon-
nect switch may vary per model. This switch does not
shut off all power, but only shuts off the 12VDC power to
the main 12V fuse panel, and the interior of the vehicle.
Batteries can still be trickle charged by the converter, and
there will still be power to some devices.
Rotating Dial Disconnect Switch
When this switch is ON, there will be a green area show-
ing a "1" along the top of the switch. To turn the switch
OFF, turn it counter-clockwise until you see the red area
along the left side of the switch showing a "0" (zero).
Lever Type Disconnect Switch
To operate this switch, turn the lever counter-clockwise to
turn off all 12VDC power to the fuse panel in the RV. The
lever can be removed and is equipped with a lanyard to
keep the key from getting lost.
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