Power your devices reliably with Dorcy Mastercell D Alkaline battery packs. These batteries are compatible with devices that use D cell batteries and offer a 10-year shelf life. Each battery includes an expiration date code, and the foil battery jacket ensures long-lasting performance. The bilingual packaging provides convenience for users. Additionally, these batteries are environmentally friendly, being mercury and cadmium free. They can operate efficiently in a wide temperature range from 0 to 120 degrees Fahrenheit (-17 to 49 degrees Celsius). Each pack contains 8 D batteries, providing ample power for your needs. (Model: 41-1639)