Types of batteries supported:

Alkaline (previously non-rechargeable) and Saline
RAM (rechargeable Alkaline Manganese)
Ni-CAD (Nickel Cadmium)Rechargeable
Ni-MH (Nickel Metal Hydride)Rechargeable

Battery Sizes Supported:

1-4 batteries of: AAA, AA, N, C, D, and 1 X 9 volt prismatic

RC999( Non-rechargeable Alkaline and Saline,NI-MH,NI-CD,AlkalineRechargeable Battery,AA,AAA,N,C,D,9V),Universal,Intelligent)Charger