User's Manual

Automatic Override Functions:
When positive power is applied to the “Ignition Sense” terminal (do not connect to ground),
it will force the charger to connect to CH3 as long as CH3 is within the voltage range >12.3V
or 24.6V on a 24v input.
Programming Your Charger
Press and hold the key for longer than 3 seconds to enter charger setting mode and
show function setting. Once new setting is done, press ‘MENU’ again for longer than 3
seconds to exit the charger setting mode.
Press the key once to keep / save the chosen setting and change the display to show the
next menu to continue other settings.
Note: The selected setting will quickly ash 3 times to acknowledge the setting.
Press the key to view other available settings.
Understanding the Two-Stage (Mode 2) Charging
(Default setting is 3)
The DC2DC+ can be set to act as a 2 stage charger (Bulk/Float). Certain applications may
require a 2 stage charge process and by setting this option, the DC2DC+ unit will act
accordingly to meet this requirement.
During the Bulk stage, the battery accepts the maximum constant current from the charger.
In Float stage, the charger continuously produces a lower constant oat voltage to maintain
the battery in a fully charged stage.
Understanding The Three-Stage (Mode 3) Charging
The Three-Stage Charging (Mode 3) has a Bulk/Absorption/Float sequence. During the Bulk
stage, the battery accepts the maximum constant current from the charger. In the Absorption
stage, the battery voltage is held to constant voltage and the charging current will slowly
reduce. In Float stage, the charger continuously produces lower constant oat voltage to
fully top up and maintain the battery in a fully charged stage.
The charger will automatically restart the full charging cycle if it senses the battery bank is
discharged to lower than 12.5V for lead acid batteries and 13.3V for lithium batteries.
Understanding The Battery Temperature Functions
The Battery Temperature Sensor is included with the charger to protect your battery and
provide better charging voltage accuracy.
When the battery temperature sensor output is used, it is highly recommended to be
installed on the main battery bank at the negative terminal. The sensor senses the battery
Enerdrive ePOWER DC2DC+ Battery Charger Owners Manual (Rev. 1.00)Page 28