Duracell Coppertop AAA, 4 Pack : Get dependable, long-lasting power from CopperTop batteries with Duralock Power Preserve™ Technology. These batteries have been engineered to deliver just the right level of power for most of your household needs. Plus, they now have up to a 10-year guarantee in storage.*
Many of the devices you use in your home are powered most efficiently by Duracell CopperTop batteries with Duralock, including:
Clocks and radios
Wireless Mice & Keyboards
To fit virtually every device out there, CopperTop alkaline batteries with Duralock are available in AAA, AA, C, D, and 9-volt sizes.