Alkaline batteries provide the longest service life for high drain devices. They will last more than twice as long as heavy duty batteries in certain applications. Alkaline batteries get their long life from their unique construction and the purity of the materials used.
All Rayovac batteries, alkaline, and heavy duty, use a no Mercury added formulation. Rayovac alkaline and zinc chloride batteries do not contain Cadmium as an active ingredient. Rayovac Alkaline and Heavy Duty batteries are recognized by the U.S. Environmental Protection Agency (EPA) as standard, household waste.