AAA battery

An AAA or triple-A battery is a standard size of dry cell battery commonly used in portable electronic devices. A carbon-zinc 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. A tripl...
Found on http://en.wikipedia.org/wiki/AAA_battery
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