Rayovac, KECR2016-1, Electronic Keyless Entry Battery, Lithium-Manganese Dioxide Chemical System, 3 V DC Nominal, 90 mAh Nominal, 2016 Battery, 2 VDC Discharge Cut-Off, 1 uA Charge Current, 30 Ohm Internal, Flat Terminal, 10 years Shelf Life, 0.787 in L x 0.787 in W x 0.063 in H Dimensions