3
*1 LV Versions not suitable for use in 24V vehicles
1 PRODUCT
FUNCTION
The BCDC2420(-LV) is a three-stage, 24V DC-DC battery charger that operates from an
alternator input of 12V nominal or a 12V nominal solar panel input. The BCDC2420 will
also charge from an alternator input from a 24V nominal vehicle*
1
. The input voltage of
the BCDC2420(-LV) can be above, below or equal to the output voltage making it ideal
for charging an auxiliary 24V battery bank where the distance from the main battery
may cause a signifi cant voltage drop. The BCDC2420(-LV) is also designed to isolate the
main battery from the auxiliary battery to avoid over-discharging the main battery. The
BCDC2420-LV operates almost identically to the BCDC2420 but is designed to operate
from an ignition trigger to allow operation in vehicles with Variable Voltage or Smart
Alternators.
1.1 Display
Panel
The front panel features 6 LEDs to display the charge profi le and charge status.
LED State
‘Charge Profi le’ LED
‘Charge Status’ LED
Off
Unit has no Power
Output is off
Blinking
Unit is in Standby
Unit is supplying power
On
Unit is on and can supply power
When blinking, the fl ash duty-cycle of the ‘Charge Status’ LED will increase to
refl ect the amount of current being supplied - If the LED is ON solid, the unit is
supplying full power (e.g. 20A for a BCDC2420).
CHARGE PROFILE
BCDC2420
24V 20A DC/DC 3 stage battery charger
A
B
C
redarc.com.au
Figure 1.6.1 - The BCDC2420(-LV) Front Panel