... Ni-MH (Nickel Metal Hydride)RechargeableBattery Sizes Supported:1-4 batteries of: AAA, AA, N, C, D, and 1 X 9 volt ... Saline,NI-MH,NI-CD,AlkalineRechargeable Battery,AA,AAA,N,C,D,9V),Universal,Intelligent)ChargerAvoid to damage the battery,don ... . You can even charge or regenerate mixed battery types and sizes at the same time!Get more life out of batteries ...