MEAN WELL intelligent charger NPB series allows 2 ways of charging control– Automatic charging with pre-programmed charging profile or real time control via CANBus interface.

Charging is a process of providing a controlled current within a controlled voltage range from charging devices to batteries. According to battery cells’ configuration the charging current and voltage can be different. Further, depends on the chemical-electrical characteristics, the charging setting can be 2-stage or 3-stage. A 2-stage charging starts with a constant current charging phase followed by a constant voltage phase. A 3-stage charging profile extends the constant voltage charging phase by having a float charging voltage in order to fully charge batteries typically Lead Acid types. Table 1 and Figure 1 shows these commonly used charging control methods.