Duracell Coppertop D alkaline batteries, built in the USA with US and global parts, deliver reliable, long-lasting power to your everyday devices throughout the home, like toys, flashlights, portable electronics, and more. Our Duracell D alkaline batteries are guaranteed for 10 years in storage, so you can rest assured they will be ready when you need them. From storm prep to holiday needs, Duracell is the # 1 trusted battery brand.