Ensure reliable power with Dorcy Mastercell D Cell Alkaline battery packs, designed for devices that use D cell batteries. Enjoy the convenience of a 10-year shelf life and an expiration date code on each battery, along with a foil battery jacket and bilingual packaging. These batteries are both mercury and cadmium-free, and they function optimally in temperatures ranging from 0 to 120 degrees Fahrenheit (-17 to 49 degrees Celsius). Trust in the quality and performance of Dorcy batteries. (Model: 41-1621)