Question

How long will a dry charged battery last?

Answer 1

Dry battery: It is a metal container that contain electrolyte with a cover of graphite rod with low moisture content. In this carbon rod act as cathode while anode is of Zinc. In this electrical energy is stored in form the form of chemical energy.

The duration of dry battery : The dry cell are designed in such a manner, they are active for $8-12$years.

So, The life span of dry charged battery is $8-12$years.