Duracell CopperTop AA and AAA alkaline batteries with Power Boost Ingredients are not only dependable, they’re also long-lasting. So, they’re great for many of the devices you use on a daily basis. And you can take comfort in a 12-year guarantee in storage. From storm prep to medical devices to holiday needs, Duracell is the #1 trusted battery brand so you know it’s a battery you can trust.