BAC150CAN Battery Charger User Manual
BAC150CAN Battery Charger Version 1.0 2019-03-05 Page 6 of 13
Fig. 2 2-Stage Charging Curve Graph
Two-stage charging method is applied for the charger to work according to the battery charging
characteristics.
1) The first stage is
‘Constant Current’ mode. When the terminal voltage is comparatively low, the
charging current is small, which effectively prevents the battery from damaging because of high
temperature. This process is called
‘low voltage trickle charging’. When the terminal voltage gets
high, the charging current changes to rated current, which makes the battery electricity increasing
rapidly. This process is
‘quick charging’.
2) The second stage is
‘Float Charging’ mode. As the electricity gets higher and higher, the charging
current is getting smaller. When the current is below 0.5A, the battery is fully charged. Then the
charging current offsets the battery self-discharge and longtime charging is unharmful for the
battery.
