6 Volt Duracell® PC915 Procell® Alkaline Battery with Screw Post TerminalsPROCELL® batteries are manufactured to rigid specifications to meet some of the highest standards of durability and longevity that professional users demand and expect.DURACELL® PROCELL® alkaline batteries: Last up to 10X longer than zinc carbon batteries in power demanding applications Long shelf life - guaranteed fresh for seven years Date coding to ensure freshness Reliable performance at temperature extremes of -4?F to 129?F