The Duracell Procell® is the strongest, longest-lasting alkaline battery on the market today. They are the #1 choice by practically every hospital, police and fire departments, and broadcasters nationwide. Supierior quality and a great price make the Duracell Procell a great buy. Internally the same as the Duracell Coppertop Battery, the Duracell Procell is great for any business, organization or agenciy that uses batteries in their operations.