The Panasonic D/2 Alkaline Battery (also known by various names such as LR20, MN1300, and E95) is a high-performance, long-lasting power solution for large devices like flashlights, radios, and toys. With a size of D (33.2mm diameter x 61.5mm height), this battery is designed for medium to high-drain applications. Known for its reliable power and extended shelf life, the Panasonic D battery ensures consistent performance and is ideal for devices requiring a significant amount of energy.