This charger from NEXcell has an intelligent CPU charging mode to achieve full charge automatically and provides 2 A charging current when only two AA batteries are in Compartment I. Advanced temperature cut off technology protects the battery from overheating with -dT, dT, Tmax and timer to prolong the life of your battery. It also has a discharging function to recondition the batteries and push buttons that control the charging/discharging of the cells.