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The AAA battery (or triple-A battery) is a standard size of dry cell
battery Battery most often refers to: * Electric battery, a device that provides electrical power * Battery (crime), a crime involving unlawful physical contact Battery may also refer to: Energy source *Automotive battery, a device to provide power t ...
. 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 The International Electrotechnical Commission (IEC; in French: ''Commission électrotechnique internationale'') is an international standards organization that prepares and publishes international standards for all electrical, electronic and r ...
as R03, by ANSI 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. 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 AAA batteries weigh around , while primary
lithium Lithium (from el, λίθος, lithos, lit=stone) is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense soli ...
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 players 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 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 2008, AAA batteries totaled 30% of primary battery sales and 32% of secondary battery (rechargeable) sales.


Other common names

* U16 (In Britain until the 1980s) * Micro (Germany) * Ministilo (Italy) * MN2400 * MX2400 * Type 286 (Soviet Union/Russia) * Palito (Brazil) * Pencil cell (India) * 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


See also

*
List of battery sizes This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use. The complete nomenclature for a battery specifies size, chemistry, termina ...
*
Battery nomenclature Standard battery nomenclature describes portable dry cell batteries that have physical dimensions and electrical characteristics interchangeable between manufacturers. The long history of disposable dry cells means that many manufacturer-specifi ...
*
Battery recycling Battery recycling is a recycling activity that aims to reduce the number of batteries being disposed as municipal solid waste. Batteries contain a number of heavy metals and toxic chemicals and disposing of them by the same process as regular ...
* Battery holder


References


External links


Specifications for Energizer alkaline AAA battery (E92) 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
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