Long-life alkaline AA batteries operate reliably in temperature extremes of negative 20 degrees Celsius to 54 degrees Celsius. Recommended for use in smoke alarms flashlights lanterns calculators pagers cameras recorders radios meters scanners CD players medical equipment toys and electronic games. Batteries are long-lasting and dependable after 10 years of storage. Include freshness dating on each package and battery. Duracell Coppertop Alkaline AA Batteries 12 / Pack (Quantity)