Duracell Cylindrical Battery, Alkaline-Manganese Dioxide, 1.5 VDC Nominal Voltage, 1200 mAh Nominal Capacity, D, 1.5 VDC Discharge Cut-Off, 136 mOhm Internal, Flat Terminal, 6 - 8 Years Shelf Life, Life Hour: 29 hr, 34.2 mm length x 34.2 mm Width x 61.5 mm H