Duracell Procell Intense Alkaline 6LR61 9V battery MN 1604 9V Set of 2. Duracell Procell Intense Power Alkaline 9V battery Singles The Duracell Procell replaces the well-known Duracell Industrial. Battery Group Limited was established in 2019 to ensure that anyone can get the batteries they need at an affordable, competitive price.