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An AA size rechargeable cell An AA battery is a standard size of battery. Batteries of this size are most commonly used in portable electronic devices. An AA battery is composed of a single electrochemical cell. The exact terminal voltage and capacity of an AA size battery depends on the cell chemistry. The AA battery size was standardized by the American National Standards Institute in 1947, but had been used in flashlights and electrical novelties for some time before formal standardization. Battery nomenclature gives different designations depending on cell size and chemistry. For example, a zinc carbon (Leclanch ) AA cell is designated "15" by ANSI, and R6 in the IEC system. In 2011, AA batteries accounted for approximately 60% of alkaline primary (non-rechargeable) battery sales in the United States. In Japan, 58% of alkaline primary batteries sold were AA. In Switzerland, AA batteries totaled 55% in both primary and secondary(rechargeable) battery sales. [1] [2] [3]
Dimensions D, C, AA, AAA, AAAA & 9-Volt batteries An AA battery measures in length without the button terminal and in diameter. [5] Alkaline AA batteries have a mass of roughly , lithium AA batteries have a mass around , and rechargeable NiMH batteries around . Primary chemistry and capacity Primary (non-rechargeable) zinc carbon (Leclanch cell) AA batteries have around 400 900 milli amp-hours capacity, depending entirely on test conditions, duty cycle, and cut-off voltage selected. Zinc carbon batteries are usually marketed as "general purpose" batteries. Zinc-chloride batteries store around 1000 to 1500 mAh are often sold as "heavy duty" or "super heavy duty". Alkaline batteries from 1700 mAh to 3000 mAh cost a little more than zinc-chloride batteries, but last proportionally longer. Non-rechargeable lithium batteries are manufactured for devices that drain a large amount of power such as digital cameras, where their high cost is offset by longer running time between battery changes. Rechargeable chemistry and capacity A solar-powered charger for rechargeable AA batteries Rechargeable Nickel cadmium battery (NiCd or NiCad) AAs with a capacity of 500 1100 mAh are available, cost increasing with capacity. Nickel metal hydride (NiMH) AAs are also available in various capacities of 1300 3000 mAh. Low self-discharge NiMh batteries are also made in the AA size. Rechargeable AA-sized batteries based on Li-ion chemistry have also been introduced. These batteries are rated at 3.6 volts and are incompatible with most AA-based devices.[6] AA lithiums have a relatively low internal resistance that effectively provides very high current if shorted. Equipment designed to rely on a battery's internal resistance to limit current may not tolerate higher inrush current with lithium cells. Where space permits, a pair of AA batteries can sometimes be replaced by a single CR-V3 battery. [7] See also References External links de:Mignon (Batterie) es:Pila AA ko:AA it:Batteria AA pl:Bateria AA ru: AA sk: l nok AA
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