Duracell Optimum AAA batteries, our #1 best performing alkaline batteries, are now formulated with 4X the patented POWER BOOST Ingredients vs Coppertop AAA. Compatible with any AAA battery-operated device, these AAA batteries are packaged in a slider pack with resealable storage tray for a more organized way to store your batteries. Duracell guarantees these batteries against defects in material and workmanship. From storm prep to holiday needs, Duracell is the #1 trusted battery brand for the moments that matter most.