Duracell Coppertop Batteries 68555. Engineered to deliver all the power you need for a wide variety of devices. Duralock Power Preserve technology for a guaranteed 10 years of storage without losing power. Specifications for Duracell Coppertop Batteries 68555: Manufacturer: Duracell Color: Black Battery Quantity: 8 Additional Features: D Battery Type: Internal Battery Battery Chemistry: Alkaline Features of Duracell Coppertop Batteries: Dependable long lasting Duralock Power Preserve technology Guarenteed 10 years of storage without losing power Package Contents: Duracell Coppertop Batteries