Description : no mercury and cadmium added. Electrochemical system : zinc-manganese dioxide (potassium hydroxide) Nominal voltage : 1.5 volts Diameter : 13.7 – 14.5 mm Total height : 49.5 – 50.5 mm Applications : toy, calculator, clock, remote control, mouse, radio, pointer, digital camera, portable lighting and digital audio. lighting and digital audio.