Duracell N batteries are used in a multitude of devices such as car key fobs and devices that are used as security system components. Duracell pride themselves in their high standards of quality and performance and this battery is a great example of this. The Duracell N battery is an alkaline battery, alkaline batteries are renowned for their lengthy shelf life of up to seven years, which means they can be stored away without having to compromise on the energy, as it will retain it until it is needed.