Anthony Lifgtates, Inc.
44
MRT Models
www.anthonyliftgates.com
800-482-0003
7.2.6 Battery Separator
The optional battery separator is designed for use in MRT
application as a solenoid priority system to protect the
chassis charging system from excessive loading while
allowing the liftgate batteries to be charged. The battery
separator has two basic operational characteristics:
Protect The Charging System
The battery separator monitors the battery system to
determine if the batteries are being charged. When the
engine or liftgate batteries reach 13.2 Volts, indicating
charging is taking place, the battery separator will
engage, joining the two battery banks. If the drain on the
charging system by the liftgate batteries or main battery
bank reduces the system voltage below 12.8 Volts, the
battery separator will disconnect the batteries from each
other, thus protecting the respective battery banks from
excessive drain.
A delay function has been incorporated in the control
circuit to prevent the battery separator from reacting to
momentary voltage fl uctuations and chattering.
Assist In Engine Starting
When the starter is activated the battery separator
compares the voltage of both battery banks. If the
vehicle’s battery is lower than the liftgate batteries,
the battery separator will engage allowing the liftgate
batteries to aid in vehicle starting. The start signal must
be at least three volts for the operation to occur.
The priorities are to assist in engine starting, if required,
and to protect the charging system from excessive power
drain.
Auxiliary Start Connection (optional)
Automatic operation. Connect a #14 gauge wire from the
start position of the ignition switch to the Start terminal
of the battery separator. Make this connection at the
ignition switch. This wire should only have voltage when
the ignition switch is in the start position.
Note
: The start signal must be able to produce at least
3 Volts in order to provide automatic boost, see
connection diagram above for manual operation
option.
Note
: The auxiliary start function should activate the
battery separator if the main battery voltage is
lower than the auxiliary battery. The start terminal
must see at least 3V* to activate. The auxiliary
battery must read at least 10 Volts.
Lamp Connections (optional)
Connect a #14 gauge wire from the lamp terminal of
the battery separator to one end of an indicator lamp
(250 mA maximum current draw). Connect the opposite
end of the lamp to the chassis ground. This lamp will
illuminate when the auxiliary start function is activated.
Checking Operation
The battery separator should now be operational. Start
the vehicle or apply a charge to the main battery. Once
the main battery rises to 13.2 Volts the battery separator
should activate. Turn off the vehicle or remove the
charge to the main battery. The battery separator should
disconnect the auxiliary battery once the voltage on the
main battery drops below 12.8 Volts.
Liftgate
Battery
Main
Battery
To Power Pack
Momentary Boost
Switch Mount
on Dash
Auxilliary
Start
Indicator
Light
For Automatic Operation
Connect to Start Position of
Ignition Switch (see step 8)
Auxilliary Start Activation
Optional Connections
For Manual Operation
Connect as Shown Here
Main
Loads
MRT-1095
