To put it simply so that even a layman can understand, a
battery is used as a type of device that is used to store energy, making it
available for use in an electrical form. It consists of one or even more cells.
History of battery:
It may surprise you but Baghdad Batteries are thought to be
the first known in history, dating back from sometime between the years of 250
BCE and 640 BCE!
Batteries can be divided into two main categories, rechargeable
batteries and non-rechargeable batteries.
Disposable batteries are also known as primary cells. They
are intended for a one time use only, to be used until the chemical changes
used to induce its electrical current supply have been finished. Their common
usages include smaller, more portable devices that have either a low current
drain or are used away from any alternative power source.
Rechargeable batteries, also known as secondary cells, have
a longer usage life since they can be recharged after their power has been
drained. You can do so by applying an externally supplied electrical current.
This causes a reversal in the chemical changes that occur during the battery’s
use. These devices used to do this are commonly known as rechargers or
chargers.
The ‘wet cell,’ or lead-acid, battery is the oldest form of
the rechargeable battery that is still in today’s use. This battery contains a
liquid found in an unsealed container that requires the battery to be kept in
an upright position. The area in which it is used must be well-ventilated so as
not to cause the ventilated, hydrogen gas to display its explosive qualities.
The lead-acid battery is quite heavy, although its cost to
manufacture is low and the high surge content levels allow it to be a commonly
used battery in places where its weight and handling ease are not of any
concern.
The most common form of a lead-acid battery is the car
battery.
A gel battery is known to be an expensive lead-acid battery
type, containing a semi-solid electrolyte that is used to prevent spillage.
The portable types are considered to be ‘dry cells.’ They
are sealed units that are useful in appliances such as cell phones and laptop
computers. These types of cells also include, nickel-cadmium or NiCd, nickel
metal hydride or NiMH, and lithium-ion or Li-Ion, listed in the order of their
increasing power density and also their cost.
Both disposable batteries and rechargeable batteries come in
various standard sizes. This is so they can easily be used in a wider amount of
appliances. The most commonly known types of batteries are the A-series,
including A, AA, AAA, and AAAA. There are many, many more less common battery types, and their usages
vary greatly.
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