High power Ultimate Lithium L91 batteries from Energizer are perfect for high drain devices such as digital cameras & flashguns. Up to 7x more powerful than ordinary alkaline batteries & with a shelf life of up to 15 years. Size AA Model No. L91 Voltage (V) 1.5 Height (mm) 50.5 Diameter (mm) 14.5 Weight (g) 14.5 Pack Size 4