National Battery Day is celebrated on February 18th of each year.
In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery (or “voltaic pile”) in 1800 by Alessandro Volta, and especially since the technically improved Daniell cell in 1836, batteries have become a common power source for many household and industrial applications.
There are two types of batteries: primary batteries (disposable batteries), which are designed to be used once and discarded, and secondary batteries (rechargeable batteries), which are designed to be recharged and used multiple times.
Primary batteries are meant for smaller-scaled jobs, typically in lighter or smaller applications. Secondary batteries are higher in initial cost, but lower in life-cycle cost. Batteries come in many sizes, from miniature cells used to power hearing aids and wristwatches to battery banks the size of rooms that provide standby power for telephone exchanges and computer data centers.
Main battery providers today for primary batteries are Duracell and Energizer, and main providers for secondary batteries are Axeon, Johnson Controls, and LG Chem.