Duracell AAA Batteries: The Duracell CopperTop AAA alkaline 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. #1 Trusted Battery Brand: Duracell CopperTop batteries are available in Double A (AA), Triple A (AAA), C, D and 9V sizes. Every Duracell is engineered with DuraLock Power Preserve, technology inside each battery that helps lock in power. Made in USA.