Duracell Coppertop AA batteries are engineered to deliver the power you need for your professional devices. Duracell CopperTop all-purpose alkaline batteries are not only dependable, they're also long-lasting. You can take comfort in a 10-year (5-year for 9V) in storage. They're 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 it's a battery you can trust. Duracell AA Batteries: The Duracell CopperTop Double A alkaline battery is designed for use in household items like remotes, toys, and more. Duracell s these batteries against defects in material and workmanship, should any device be damaged due to a battery defect, Duracell will repair or replace it at thier option. Long Lasting Power: Duracell alkaline batteries are designed and developed for long lasting performance. for 10 years in Storage: Duracell AA alkaline batteries are 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.