Experience a Quantum leap in battery power Features Hi-Density Core(TM) for reliable, long-lasting power. Use Quantum to power things like portable electronics, wireless mice, toys, remote controls, calculators and more. Quantum batteries do not contain added mercury and are rated for reliable operation in extreme temperatures ranging from -4degrees F to 130degrees F. Each battery is individually date-coded for efficient inventory management. Features Duralock Power Preserve(TM) Technology. Batteries remain dependable for up to 10 years in storage. Duracell(R) Quantum AA Alkaline Batteries, Pack Of 8 is one of many AA Alkaline Batteries available through Office Depot. Made by Duracell.