Varta long life power High Energy 2 D Size Alkaline Batteries are perfect for everyday use. They are a great product for the people who don't want to spend a lot of money on a battery that will just end up sitting in a drawer. They are made of high quality materials that are able to last a long time. D cells are typically used in high current drain applications, such as in large flashlights, radio receivers, and transmitters, and other devices that require an extended running time.