Duracell Coppertop Battery C 4 pk. MN1400R4ZX17. Alkaline batteries typically yield more electric energy and have a longer shelf life than zinc-oxide batteries of the same voltage. The batteries have a shelf life of up to 10 years and can operate in temperatures between -4 and 129 F. They are mercury-free to avoid contamination. Specifications for Duracell Coppertop Battery - C: Manufacturer: Duracell Battery Quantity: 4 Battery Type: C Package Contents: Duracell Coppertop Battery - C The Duracell Coppertop Batteries is a quality addition to the Duracell lineup. For more great deals on Camping Essentials Batteries by Duracell please browse our Duracell Camp & Hike page. Provides dependable long-lasting power. 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.