... Ni-CAD (Nickel Cadmium)Rechargeable Ni-MH (Nickel Metal Hydride)RechargeableBattery Sizes Supported:1-4 batteries of: AAA, AA, N, C, D ... X 9 volt prismaticRC999( Non-rechargeable Alkaline and Saline,NI-MH,NI-CD,AlkalineRechargeable Battery,AA,AAA,N,C,D,9V),Universal, ... Intelligent)ChargerAvoid to damage the battery,don't charge unused ...