... (Nickel Metal Hydride)Battery Sizes Supported:1-4 batteries of: AAA, AA, N, C, D, and 1 X 9 volt prismaticFull CE approval ... with the following protection schemes:Alkaline battery protection, faulty battery protection, overcharge protection, short ... of the battery cell allowing it to be reused up to 70 times! LED and LCD display 1.5V/9V battery charger