Westinghouse Dynamo Alkaline AA Batteries provide power for a variety of household devices including remote controls, toys, various electronics and flashlights. Guaranteed fresh for up to 10 years, they are also useful in devices that are not used regularly and they still supply power when needed. They use a mercury-free formula, making them safe as well as reliable. This 24-pack of Westinghouse Dynamo Batteries is a good purchase for any household.