Try our next generation of power. Upgrade your devices with the new Duracell Optimum - our best performing AAA alkaline battery. Duracell's most groundbreaking innovation yet, the all new Duracell Optimum alkaline battery has a new cathode system that can deliver up to 100% Extra Life in some devices, or Extra Power in other devices*. - Extra Life - Duracell Optimum AAA lasts longer in some devices like toys**. - Extra Power - Duracell Optimum AAA delivers more power than other Duracell Alkaline batteries in a wide range of devices***. - Optimum Storage - new and innovative ‘book' style pack has a door and an organiser tray inside keeps new batteries in place and allows secure storage of used ones for recycling. - The packaging is 100% recyclable and 0% plastic. - Optimum batteries are available in size AA and AAA. *Delivers extra life in AAA-size batteries compared to the Minimum Average Duration of the 2015 IEC toy test OR extra power in a wide range of devices vs. next best Duracell alkaline AAA. Results may vary by device or usage pattern (www.iec.ch). For more info: www.duracell.co.uk **Delivers extra life in AAA-size batteries compared to the Minimum Average Duration of the 2015 IEC Toy test ***Delivers extra power in a wide range of devices vs. next best Duracell alkaline AAA. For more info: www.duracell.co.uk