Duracell Coppertop all-purpose alkaline batteries are not only dependable, theyre also long-lasting. You can take comfort in a 10-year guarantee in storage. Theyre great for many of the devices you use on a daily basis. And from storm season to medical needs to the holidays, Duracell is the #1 trusted battery brand so you know its a battery you can trust. Battery Features The Duracell Coppertop C battery is designed for use in household items like remotes, toys and more. Long Lasting Power: Duracell alkaline batteries are designed and developed for long lasting performance. Guaranteed for 10 years in Storage: Duracell C alkaline batteries are guaranteed for 10 years in storage. #1 Trusted Battery Brand: Duracell CopperTop batteries are available in Double A (AA), Triple A (AAA), C, D and 9V sizes.