Duracell Coppertop D Batteries are designed to deliver reliable power when you need it most. Known for their long-lasting performance, these D batteries are perfect for everyday devices like flashlights, toys, and portable electronics. Each battery is made with triple corrosion protection, ensuring you can count on them for consistent energy. This four-pack of 1.5-volt batteries can last in storage for up to 10 years, giving you peace of mind that they will be ready to use whenever required. As the number one trusted battery brand, Duracell stands behind the quality of its products, making the Coppertop D Batteries an excellent choice for powering your devices safely and effectively.