Duracell PROCELL alkaline batteries are manufactured using superior cell design vs prior Industrial alkaline batteries to ensure high-quality cell construction Design safety manufacturing and qualification follow Procells stringent battery standards which incorporate parts of the ANSI and IEC battery standards Economically packaged in bulk and individually date-coded for effective inventory management Each battery comes with a quality warranty Operating in temperatures from -20°C to 54°C Used by manufacturers around the world PROCELL Alkaline Batteries have been designed in collaboration with manufacturers to work best in professional devices