New Duracell Optimum. Our #1 best performing AA Alkaline battery. Duracell’s most groundbreaking innovation yet, the all new Duracell Optimum alkaline battery has a new cathode system that makes it our best performing ever! For example, it allows you to take up to 600 pictures with your Fujifilm Instax mini 11 camera or play for longer with your XBOX Wireless Controller¹. Optimum Performance meets Optimum Packaging Duracell Optimum’s new and innovative ‘book’ style pack has a door and an organiser tray inside, which finally means no more batteries rolling around the kitchen drawer! Instead your batteries remain conveniently and securely stored until you are ready to use them. And once batteries are exhausted, you can re-store them, ready for future recycling. The packaging is 100% recyclable. Duracell Optimum batteries are available in AA, AAA formats. ¹Delivers extra battery life in Xbox Wireless Controller in Forza Motorsports7 vs. next best Duracell alkaline AA. Results may vary by device or usage pattern.