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

dry cell upLine art drawing of a dry cell: 1. brass cap, 2. plastic seal, 3. expansion space, 4. porous cardboard, 5. zinc can, 6. carbon rod, 7. chemical mixture A dry cell is a type of electric battery, commonly used for portable electrical devices. Un ...

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 A zinc–carbon battery (or carbon zinc battery in U.S. English) is a dry cell primary battery that provides direct electric current from the electrochemical reaction between zinc and manganese dioxide (MnO2) in the presence of an electrolyte. I ...

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

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 In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a base (chemistry), basic, ionic compound, ionic salt (chemistry), salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as ...

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 solid el ...

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) (also including the related digital audio player (DAP)) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored o ...

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 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

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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Use

Other common names

See also

References

External links