Energizer® MAX® Alkaline Battery, Zinc-Manganese Dioxide Chemical System, 9 V Nominal, 625 mAh Nominal Capacity, 25 mA Nominal Discharge, Miniature Snap Terminal, Metal Case, 5 years Shelf Life, For Use With: Smoke Detectors, Toys, Remote Control Cars, Clocks and other Valuable Devices, 1.043 in L x 0.689 in W x 1.909 in H