... only regenerates dead alkaline batteries, it recharges several common rechargeable batteries as well. Types of batteries supported:Alkaline ( ... -CAD (Nickel Cadmium)Rechargeable Ni-MH (Nickel Metal Hydride)Rechargeable Battery Sizes Supported:1-4 batteries of: AAA, AA, N, C, D ... volt prismatic RC999( Non-rechargeable Alkaline and Saline Battery,NI-MH,NI-CD rechargeable Battery,AA,AAA,N,C,D,9V),Universal ...