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the time. If the Charging LED is off when the button is pressed, the Equalize cycle will begin
immediately.
The charger will charge the battery at approximately 10% its normal rate (i.e. 4 amps for a 40
amp charger) until the battery reaches equalize voltage and then the current reduces as neces-
sary to maintain the battery at that voltage. Three hours after the Equalize cycle begins, the
charger will return to the float mode where the battery can be maintained indefinitely. If the
battery temperature reaches 120 degrees F (50 degrees C) the equalize cycle will end and the
charger output reduced to a very low voltage until the battery cools, and then the charger will
return to the float mode.
Remote Battery Temperature Sensor Installation
The remote battery temperature sensor allows the monitoring of the battery bank so that
the charging profile can be adjusted to optimally charge the battery bank depending on the
temperature of the battery bank. NOTE: The temperature sensor must be used during an
equalize cycle or damage to the battery may occur.
The battery temperature sensor may be installed in many different ways, so long as the sensor
stays in contact with the battery. The preferred method is as follows:
The batteries to be charged will be placed on a platform made of wood. Prior to placing the
batteries on the wooden platform a cavity is hollowed out such that the sensor will fit inside
the cavity and be flush with the battery. Place the sensor inside the cavity facing the proper
way (this is shown on the sensor). Next connect the sensor wiring to the telephone jack
marked “Batt 1” on the side of the unit. Note: If there is only one temperature sensor, it gets
plugged into “Batt 1”. If there is a second temperature sensor, it should be plugged into to the
phone jack labeled “Batt 2”.
If a battery blanket is used the sensor may be tucked inside the blanket with the proper side of
the sensor facing the battery. The sensor may be placed on top of the battery but it should be
secured to the battery so as to prevent it from losing contact with the battery.
Battery Charger Temperature Compensation
The charger is calibrated with the sensor input preset to 77 degrees (25 degrees C). For
example, for a 12V battery, this voltage is 13.6 volts, and 27.2 volts for a 24V battery. See the
specifications for the temperature compensation coefficient.
