AAA battery

A zinc–carbon battery in this size is designated by IEC 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. In Mainland China, they are called #7 batteries, the name originating from Charles F. Burgess of the Burgess Battery Company designating his AAA batteries "Number 7". ==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 2007, AAA batteries totaled 30% of primary battery sales and 32% of secondary battery (rechargeable) sales. ==Other common names==

1.2 V NiMH rechargeable batteries in AA and AAA • U16 (In Britain until the 1980s) • Micro (Germany) • Ministilo (Italy) • MN2400 • MX2400 • Type 286 (Soviet Union/Russia) • Palito (Brazil) • Pencil cell (India, Turkey) • UM 4 (JIS) • #7 (Mainland China) • #4 (Taiwan) • 6135-99-117-3143 (NSN) ==See also==