Duracell Coppertop AA Battery features a duralock power preserve technology for the primary use in flashlights, toys, remote controls. Battery size: AA Alkaline batteries trusted everywhere Longest-lasting CopperTop ever Delivers great bursts of energy for today's power-hungry devices 7-year manufacturer's guaranteed freshness dating Up to 15% longer lasting vs. the next leading competitive brand Next leading alkaline based on Nielsen sales data AA size Results vary by device and usage pattern Up to 15% longer lasting vs. Energizer Max Guaranteed for 10 years in storage Duracell Coppertop AA Battery consists of alkaline-manganese dioxide that increases conductivity with flat terminal. Battery delivers 1.5 V and provides quality/dependability in everyday devices you use most. 24 Pack