.Mini CPU controlling the process of charging and discharging. 2.Charging and discharging function are available. 3.Charging current: 350mA or 500mA, trickle charging current: 40mA 4. Disharging current: 350mA 5. LCD indicate power. Charge. Discharge and full charge states. 6.Duplex protection function. 7.External protection function. 8. Output power of Adaptor: 12V 0.8A 9. Continuous working time > 24hrs 9. One base, different slots or adapter acc. to different battery used in different countries