Duracell Coppertop all-purpose alkaline batteries are not only dependable, they’re also long-lasting. You can take comfort in a 10-year guarantee (5-year guarantee for 9V) in storage. They’re great for many of the devices you use on a daily basis. And from storm season to medical needs to the holidays, Duracell is the battery you can trust. Battery Type: Alkaline; Battery Size: AA; For Use With: Everyday Electronic Devices; Voltage: 1.5 V.