This AC charger is made solely for charging you Tamiya LF-6.6V Batteries. Using the AC100V outlet as an electric source, this charger makes use of an individual switch for operation and features safe and secure charging of batteries. Charging progress and errors could be examined through the Light-emitting Diode indicator to guard the charger and battery pack. This charger will charge Tamiya LF2200-6.6V Racing Pack in roughly 70 mins and LF1100-6.6V Rushing Pack (M-size) in approximately 35 minutes.