The AAA battery (or triple-A battery) is a standard size of

dry cell An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices. When a battery is supplying power, its positive terminal is the cathode and its nega ...

battery. One or more AAA batteries are commonly used in low-drain portable electronic devices. A zinc–carbon battery in this size is designated by IEC as R03, by

ANSI The American National Standards Institute (ANSI ) is a private nonprofit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States. The organiz ...

C18.1 as 24, by old JIS standard as UM-4, and by other manufacturer and national standard designations that vary depending on the cell chemistry. The size was first introduced by The American Ever Ready Company in 1911. In China, they are called #7 batteries, the name originating from Charles F. burgess of the Burgess Battery Company designating his AAA batteries "Number 7". An AAA battery is a single cell that measures in diameter and in length, including the positive terminal button, which is a minimum . The positive terminal has a maximum diameter of ; the flat negative terminal has a minimum diameter of .

Alkaline In chemistry, an alkali (; from the Arabic word , ) is a basic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The ...

AAA batteries weigh around , while primary

lithium Lithium (from , , ) is a chemical element; it has chemical symbol, symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard temperature and pressure, standard conditions, it is the least dense metal and the ...

AAA batteries weigh about . Rechargeable nickel–metal hydride (NiMH) AAA batteries typically weigh .

Use

AAA batteries are most often used in small electronic devices, such as TV remote controls,

MP3 player A portable media player (PMP) or digital audio player (DAP) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. Normally they refer to small, battery-powered devices ...

s and digital cameras. Devices that require the same voltage, but have a higher current draw, are often designed to use larger batteries such as the

AA battery The AA battery (or double-A battery) is a standard size single cell cylindrical Dry cell, dry battery. ANSI and IEC battery nomenclature gives several designations for cells in this size, depending on cell features and chemistry. The Battery nom ...

type. AA batteries have about three times the capacity of AAA batteries. With the increasing efficiency and miniaturization of modern electronics, many devices that previously were designed for AA batteries (remote controls, cordless computer mice and keyboards, etc.) are being replaced by models that accept AAA battery cells. As of 2007, AAA batteries accounted for 24% of alkaline primary battery sales in the United States. In Japan as of 2011, 28% of alkaline primary batteries sold were AAA. In Switzerland as of 2007, AAA batteries totaled 30% of primary battery sales and 32% of secondary battery (rechargeable) sales.

Other common names

* U16 (In

Britain Britain most often refers to: * Great Britain, a large island comprising the countries of England, Scotland and Wales * The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising Great Britain and the north-eas ...

until the 1980s) * Micro (

Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...

) * Ministilo (

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

) * MN2400 * MX2400 * Type 286 (

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

/Russia) * Palito (Brazil) * Pencil cell (India, Turkey) * UM 4 ( JIS)Heinz Albert Keighne, ''Battery technology handbook'', CRC Press, 2003 , page 374. * #7 (China) * 6135-99-117-3143 (NSN)Defence Standards: 61 Series - Electrical Wire and Power

References

External links

Specifications for Energizer alkaline AAA battery (E92)

Specifications for Energizer lithium AAA battery (L92) Brand Neutral Drawing Of Alkaline AAA Battery based on ANSI specifications Brand Neutral Drawing Of NICAD AAA Battery based on ANSI Specifications

Brand Neutral Drawing Of NiMH AAA Battery based on ANSI Specifications

Brand Neutral Drawing Of Rechargeable AAA Battery based on ANSI Specifications
{{Portal bar, Energy, Electronics Battery shapes

Use

Other common names

See also

References

External links