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Battery may refer to:

  • Battery (electricity), an array of electrochemical cells for electricity storage, either individually linked or individually linked and housed in a single unit
  • Battery (crime), contact with another in a manner likely to cause bodily harm
    • Battery (tort), intentional harmful or offensive contact with a person under civil law
  • Artillery battery, an organized group of artillery pieces; also gun battery with similar groupings on warships
    • Out-of-battery, the discharge of a weapon before the action has returned to the normal firing position


In entertainment

Other uses

  • Battery (drink), a brand of beverage
  • Battery (baseball), collectively, the pitcher and catcher
  • Battery cage, a confinement system for egg-laying chickens
  • Battery (chess), a tactic consisting of placing two or more pieces on the same rank, file, or diagonal
  • "Battery" (also "stamp battery" or stamp mill), a type of mill that crushes material by pounding
  • "Batteries" or "OCaml Batteries Included", a community-built development platform for the OCaml programming language.

1911 encyclopedia

Up to date as of January 14, 2010
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Up to date as of January 15, 2010
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Definition from Wiktionary, a free dictionary



Wikipedia has an article on:



From Middle French batterie, from Old French baterie (action of beating), from batre (batter), from Latin battuō (beat).



Electrical batteries
A canon battery



battery (plural batteries)

  1. A device that produces electricity by a chemical reaction between two substances.
  2. (law) The crime or tort of intentionally striking another person.
  3. A coordinated group of artillery.
  4. An array of similar things.
    Schoolchildren take a battery of standard tests to measure their progress.
  5. A set of small cages where hens are kept for the purpose of farming their eggs.
  6. (baseball) The catcher and the pitcher together
  7. (chess) Two or more major pieces on the same rank, file, or diagonal

Derived terms


See also

Simple English

A battery is a device that can store electricity. Some are rechargeable, and some are not. They store direct current (DC) electricity.

A battery really means two or more wet or dry cells connected in series for more voltage, or in parallel for more current, although people often call a cell a battery. AA, AAA, C, and D batteries all have 1.5 volts. The voltage of a cell depends on the chemicals used while the amount of power or current it can supply also depends on how large the cell is; a bigger cell of a given type can supply more amps, or for a longer time.

The chemical reactions that occur in a battery are exothermic reactions and, thus, produce heat. For example, if you leave your laptop on for a long time, and then touch the battery, it will be warm or hot. However, the batteries used in laptops are called lithium-ion batteries and they sometimes do have a fire hazard (A few years ago, dell laptops that that were powered by lithium batteries began to catch fire, though this event was rare.).

Batteries come in lots of different shapes and sizes and voltages. It is possible, but not easy, to run wires to use an odd size battery for an odd purpose.

Batteries are always more costly/expensive than mains electricity. But mains electricity is not suitable for things that are mobile.

Bicycles have tail-lights that can be operated by batteries, and sometimes by a little generator powered by the wheels.

Hand and foot generators can be used to replace batteries in various devices, but they can be tiresome.

Wind-up generators are now available to power small clockwork radios, clockwork torches, etc.

Since clockwork clocks have been around for hundreds of years, and batteries for two hundred, it is amazing that no-one thought of a clockwork torch until recently.

Rechargeable batteries are recharged by reversing the chemical reaction that occurs within the battery. But a rechargeable battery can only be recharged a given amount of time (recharge life). Even iPods, with built in batteries, cannot be recharged forever. Moreover, each time a battery is recharged , its ability to hold a charge is degraded a bit. Non-rechargeable batteries should not be charged as various caustic and corrosive substances can leak out, such as potassium hydroxide.



The very first batteries were invented in the middle east around 1000 B.C. Then they were buried and forgotten about.

The first battery was invented in 1800 by Alessandro Volta. Nowadays, his battery is called the voltaic pile.

Later batteries were bottles with a fluid and some metal rods in them. People had to be careful not to turn these batteries upside-down so the fluid would spill.

In modern batteries, the fluid is "soaked up" in a kind of paste. And everything is put in a completely tight case: Because of this case, nothing can spill out of the battery. An exception is car batteries; they still have liquid inside.

Types of batteries

Alternatives to Batteries

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