RAYOVAC 808 6V Alkaline F-Cell Lantern Battery with Spring Terminals Ideal For High-drain, Frequent-use Devices Built To Exceed Performance Demands Of Industrial Applications Long-lasting Alkaline Formula 6 volt spring terminal; Designed with powerful F cell batteries Lasts 3x Longer than the competition's classic lantern battery Built to exceed performance demands of industrial applications Mercury-free alkaline formula, guaranteed against leakage, environmentally safe- meets EPA requirements for landfill disposal