BAC1203VL Battery Charger User Manual
BAC1203VL Battery Charger Version 1.0 2019-06-20 Page 4 of 7
1.
OVERVIEW
Fit with up-to-date power supply device, battery charger BAC1203VL is specially designed for
meeting the charging characteristics of lead-acid batteries and can be used for long-term supplement
(float) charging of 12V battery pack.
2.
PERFORMANCE AND CHARACTERISTICS
It has the following characteristics:
1)
Applies switch power supply structure, wide range and low input voltage, small size, light weight,
high efficiency rate;
2)
Applies automatic two-stage charging process (first constant current, then constant voltage)
according to storage battery charging characteristics to prevent overcharging and significantly prolong
battery lifetime;
3)
Short-circuit protection function;
4)
Suitable for 12V storage battery with maximum charging current 3A;
5)
LED display: Power indication and charging indication;
3.
CHARGING PRINCIPLE
Figure 1 Charging Principle Diagram
Charging is performed according to the battery charging characteristics by two-stage method.
Charging type is ‘constant current type’, which means that when the battery terminal voltage falls below
the pre-set value, charging current will be constant; when the battery terminal voltage exceeds the
pre-set value, charging current will decrease with the rising of terminal voltage until the pre-set current
value is reached; then chargers automatically return to float mode. At this time charging current gets
smaller and smaller gradually. The terminal voltage also gets higher and higher to the pre-set value
gradullay. when the charging voltage gets over 13.5V, battery is fully charged in a degree. Afterwards
charging current only offsets battery's self discharging. long-term charging does no harm to the battery.
That is, charger can keep the fully charged status of the battery and also can ensure the usage life of
the battery.
