... Ni-CAD (Nickel Cadmium)Rechargeable Ni-MH (Nickel Metal Hydride)RechargeableBattery Sizes Supported:1-4 batteries of: AAA, AA, N, C, D, ... and 1 X 9 volt prismaticRC999( Non-rechargeable Alkaline and Saline, ... fantastic device not only regenerates dead alkaline batteries, it recharges several common rechargeable batteries as well, helping you save money and ...