Redarc BCDC1225 User Manual

1 PRODUCT FUNCTION
1.3 Turn On/Off Thresholds
12V 24V Solar
Low voltage conditions
(open circuit, tested every
100s)
Turn ON above
13.2V
Turn ON above
26.4V
Turn ON above
17.5V
Turn OFF below
12.7V
Turn OFF below
25.4V
Turn OFF below
17.2V
Low voltage conditions
(loaded, constantly tested)
Turn OFF instantly
below 8V
Turn OFF instantly
below 17V
Turn OFF instantly
below 8V
Turn OFF after 20
secs below 9V
Turn OFF after 20
secs below 18V
N/A
Over voltage shutdown Turn ON below
15.5V
Turn ON below
32V
Turn ON below
28V
Turn OFF instantly
above 16V
Turn OFF instantly
above 32.5V
Turn OFF instantly
above 29V
Turn OFF after 20
secs above 15.6V
Turn OFF after 20
secs above 32.1V
Turn OFF after 20
secs above 28.2V
Under voltage shutdown Shutdown if Output Battery < 4V
1.4 Charging Algorithm
When the BCDC1225 is turned on, it will move into the bulk charging stage called
Boost stage. Boost stage maintains a constant current until the battery voltage
reaches its set point. The current in Boost stage may vary during operation in
order to maintain safe operating temperature, or to limit the difference between
input and output voltage.
The charger will then move to Absorption stage. This stage maintains a constant
voltage level for a predetermined period of time or until the current being drawn
by the output drops to less than 4A for 30 seconds; after which the charger will
enter Float stage.
Float stage maintains 13.3V on the output battery, keeping the battery topped
up. This counteracts the battery’s self discharging. When a load applied to the
battery causes it to lose charge, the charger will move back into Boost.
4

Redarc BCDC1225 Specifications

General

Brand	Redarc
Model	BCDC1225
Category	Automobile Battery Charger
Language	English