Lithium Battery, Cylindrical Primary, Lithium/Iron Disulfide (Li/FeS2), 1.5 V Nominal, 3 A-hr Nominal Capacity, AA, 2.5 A Maximum Discharge, 20 yr at 21 deg C Shelf Life, 0.57 in Dia x 1.99 in H, -40 to 140 deg F Operating