In science and technology, a battery is used as a type of device used to store energy, making it available for use in an electrical form. Consist of electrochemical devices, including one or more galvanic cells.

Batteries of Baghdad is believed to be the first known in history, dating from sometime between 250 BC and 640 BC. Modern drumming started with the voltaic pile, which was developed by Alessandro Volta, Italian physicist, in 1800. Based on a 2005 estimate, the battery industry generates, no pun intended, about 48 billion dollars in annual sales.

Batteries can be divided into two main categories, batteries and rechargeable or disposable batteries.

Disposable batteries are also known as primary cells. They are designed for use only once, to be used until the chemical used to induce the power supply have been completed. Its most common uses include smaller instruments and more portable than have a low leakage current or used away from sources of alternative energy.

Rechargeable batteries, also known as secondary cells, have a longer wear life, and that can be recharged after power has been drained. You can do this by applying an electric current supplied externally. This causes a reversal of the chemical changes that occur during use of the battery. These devices used for this purpose are commonly referred to as carriers or shippers.

The "wet cell", or lead, the battery is the oldest form of rechargeable battery that is still in use today. This battery contains a liquid in an unsealed container that requires the battery to keep it upright. The area that is used should be well ventilated to avoid causing ventilation, hydrogen gas to display its explosive qualities.

The lead-acid battery is quite heavy, though its manufacturing cost is low and increasing high levels to allow a battery that is commonly used in places where its weight and ease of use are of no concern.

The most common form of lead-acid battery is the car battery.

A gel battery is known to be an expensive type of lead-acid battery containing a semi-solid electrolyte that is used to prevent spillage.

The types of laptops are "dry cells." Are sealed units that are useful in devices such as cell phones and laptops. These cell types are also found, nickel-cadmium or NiCd, or NiMH nickel metal hydride and lithium-ion or Li-Ion, listed in order of their power density and also increasing the cost.

Both disposable and rechargeable batteries come in several standard sizes. This is what can easily be used in an expanding range of devices. The most popular types of batteries are series A, as A, AA, AAA and AAAA. Also known are B, C, D, F, G, J and N. Other variants include 3R12, 4R25, PP3, PP9, and 996 and PC926 used in flashlights. There are many, many more less common types of battery and its uses are varied.