Duracell offers a wide range of batteries to be used in electronics that require reliable power. Duracell Ultra 9V batteries are alkaline batteries ideal for powering all your devices and have longer lasting performance for high drain devices vs. ordinary zinc carbon batteries. Available in sizes AA, AAA and 9V. Duralock technology keeps unused Duracell batteries fresh and powered up to 5 years in ambient storage. Duracell's best alkaline proposition for high drain devices, such as digital cameras, photoflash, high powered toys or boomboxes, and of course are great fit for the regularly used devices as motorised toys, flashlights, portable game controllers, shavers, toothbrushes and more. 9V size battery. Also known as MX-1604, MX1604. Single pack.