The Duracell Procell AA and AAA alkaline battery is a strong, long-lasting alkaline battery. Duracell Procell batteries are the preferred choice by professionals around the world. Health Care facilities everywhere prefer Duracell Procell to other brands 5 to 1, hospitals use in ER equipment because they know it will provide the power they need when they need it! Law enforcement, police departments and fire departments nationwide depend on Duracell to light their way. Internally the Procell alkaline battery is the same as the Duracell Coppertop battery, the Duracell Procell 9 volt alkaline battery is great for businesses and organizations that use batteries in their operations. Outstanding performance and reliability combined with a great price makes the Duracell Procell AA and AAA battery a great buy and guaranteed to go the distance. Our Duracell Procell alkaline batteries are factory fresh and highly dependable, delivering long-lasting power. Duracell Procell AA and AAA alkaline batteries operate reliably in temperature extremes of -20° C to 54° C. Each 9 volt battery has a minimum 7 year shelf life and is date coded with the expiration month and year stamped on each battery. The Duracell Procell 9 volt alkaline battery contains no added mercury.