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A battery is made up of several electrochemical cells which convert the stored chemical energy into electricity. The first ever battery was invented back in 1800 by Alessandro Volta. These batteries, today, serve the purpose of electricity generation in our everyday life. Batteries are commonly used in households, as well as, commercially in factories and industries. A survey conducted in 2005 reflected that the usage of batteries has added to almost 6% growth per year

Battery Categories

There are two distinct forms of batteries; primary and secondary. Primary batteries are the ones that are disposed off after their life is over. Secondary batteries are, however, rechargeable. They can be recharged and used again.

Battery Types

Following is an explanation of four different types of batteries.

Wet Cells

This type of battery may also be referred to as a flooded battery, since its internal liquid bathes all the parts of the battery. It may also be called a vented cell, as, the gases that are formed internally have an outlet to escape into the air. These wet cells are usually produced using laboratories beakers in order to show how an electrochemical cell functions. These wet cells fall under the category of primary batteries and, therefore, have a limited duration of life, after which, they are discarded.

Dry Cells

Dry cells provide electrical energy when current passes through an electrolytic conductor, present in the form of a dry, thick paste. There is no problem of leakage while using a dry cell, since it does not contain any liquid. Therefore, it is useful as a portable battery.

Molten Salt Cells

They are a unique kind of batteries that exist in both primary and secondary forms. They make use of molten salt in order to conduct electricity. Due to the magnitude of power and energy that they are able to produce, molten salt cells are commonly used in vehicles.

Reserve Battery

A Reserve battery is stored in an inert form. They are activated, by adding an electrolytic conductor, when their use is required. Although they can be stored for a number of years, their usage is limited to a few seconds or minutes.
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