3
1 PRODUCT
FUNCTION
The BCDC1225D/BCDC1240D is a three-stage, 12V DC-DC battery charger that operates
from an alternator input of 12V or 24V and a 12V nominal solar panel input. The input
voltage of the BCDC1225D/BCDC1240D can be above, below or equal to the output
voltage making it ideal for charging an auxiliary 12V battery where the distance from the
main battery may cause a signifi cant voltage drop. The BCDC1225D/BCDC1240D is also
designed to isolate the main battery from the auxiliary battery, to avoid over-discharging
the main battery.
1.1 Display
Panel
The front panel features 7 LEDs to display the charge profi le and charge status.
Figure 1.1.1 - The BCDC1225D and BCDC1240D Front Panels
1.2 Charge
Profi le LEDs
The Dual Input In-vehicle Battery Chargers feature 4 different charging profi les
designed to suit your battery’s charging requirements. It is recommended to
refer to the charging specifi cations stated by the battery manufacturer and the
installation temperature chart below (Figure 1.2.1) before selecting the profi le for
your installation.
Auxiliary Battery Location
Maximum Battery
Voltage Specifi cation
Cabin
Install
Engine Bay
Install
14.6
A
A
15.0
B
A
15.1
C
B
LiFePO
4
Li
Not Recommended
Check the manufacturer’s data for your battery and ensure that the ‘Maximum’ voltage
of the profi le you select does not exceed the manufacturer’s recommended maximum
charging voltage. If the ‘Maximum’ voltage is too high for your battery type, please select
another charging profi le.
25
50 +
Figure 1.2.1 - Charge Profi le Selection
