Reliability is the name of the game for these Energizer EN91 Industrial AA Batteries. These impressive 1.5V batteries are capable of powering high-powered devices such as flashlights and digital cameras as well as lasting in low-drain devices like remote controls and digital clocks. Their Zinc Manganese Dioxide (Zn/MnO2) chemistry is both stable, able to function in a wide range of temperatures, and long-lasting, with an impressive shelf life of up to 7 years. Within the 24-pack's box packaging are 6 smaller boxes containing 4 cells each, allowing for much more convenient carry and storage.