Get long-lasting, reliable power for the devices your business uses most. Batteries are engineered to deliver just the right level of power for most electronic needs. CopperTop® batteries contain no added mercury and are rated for reliable operation in extremes from -4°F to 129°F. Individually date-coded and up to 10-year freshness guarantee in storage. Battery Type: Alkaline; Battery Size: AAA; For Use With: Everyday Electronic Devices; Voltage: 1.5 V.