A Dry cell is a type of chemical cells, commonly used today, in the form of batteries, for many electrical appliances[disambiguation needed]. It was developed in 1887 by Japanese clockmaker Yai Sakizō (ja:屋井先蔵) and in 1888 by the German scientist Karl Gassner.[1]
A dry cell uses a paste electrolyte, with only enough moisture to allow current to flow. Unlike a wet cell, a dry cell can operate in any orientation without spilling, as it contains no free liquid, making it suitable for portable equipment. By comparison, the first wet cells were typically fragile glass containers with lead rods hanging from the open top and needed careful handling to avoid spillage. Lead-acid battery did not achieve the safety and portability of the dry cell until the development of the gel battery.