Rechargeable AA-sized batteries based on Li-ion chemistry have also been introduced.
A newer form, low self-discharge NiMH batteries, are sold precharged and ready for use. These use different construction and have lower capacity (1400–1600 mAh) than the highest capacity NiMH batteries. New NiMH AAs designed for high current applications are beginning to become available. The older NiCd battery chemistry can supply a higher current than typical NiMHs, so NiCds are commonly used to power model cars or other relatively high-current-draw devices. Nickel-metal hydride (NiMH) AAs are also available in various capacities ranging from 1300 to 2850 mAh. Nickel-cadmium (NiCd or NiCad) AAs with a capacity of 650 to 800 mAh are commonly available, while 800 to 1000 mAh AA types are rarer and more expensive. The capacity of rechargeable AA batteries varies with the technology used. These should only be used in devices rated for the higher voltage. As of 2008, the only 1.5 V lithium AA is manufactured by Energizer, although AA-sized batteries with different nominal voltages are available from others. Single-use lithium batteries are also available for high demand devices such as digital cameras, where their high cost is offset by longer running time between battery changes. Alkaline batteries from 1700 mAh to almost 3000 mAh cost a little more, but last proportionally longer. Zinc-chloride batteries of 1000 to 1500 mAh are often sold as "long life" or "heavy duty". Primary (non-rechargeable) zinc-carbon AA batteries of 400–900 milli amp-hours capacity are commonly made using Leclanché cell technology. C and D cells, being larger, last longer still as a rough guide, the capacity of a battery scales linearly with its mass. AA batteries, however, provide power for a longer period than AAA batteries, because their larger size allows them to store a greater mass of anode material which is consumed as it does electrical work. The voltage of an AA battery is the same as an AAA battery, C cell or D cell. Specialty batteries based on more unusual chemistries can run at a voltage as high as 1.6 V under load. The nominal output voltage of single-use AA batteries is 1.5 volts, while NiCd and NiMH rechargeable batteries have a nominal voltage of 1.2 V.
Traditional alkaline AA batteries weigh roughly 23 g (0.81 ounces), Lithium AA batteries weigh around 15 g (0.5 oz), and rechargeable NiMH batteries weigh about 31 g (1.1 oz). This article nonetheless prefers the more common term "battery".Īn AA battery measures 51 mm in length (50.1 mm without the button terminal), 13.5–14.5 mm in diameter, (1.97×0.56 inches).
Technically, a battery is a collection of cells working together, such as in a car battery. As an AA battery is composed of a single chamber, it is more correctly referred to as a cell. The AA battery type was standardized by ANSI in 1947 and is also known internationally as LR6 (alkaline), FR6 (lithium-ion), R6 (carbon-zinc) or Mignon.
#1.5 volt battery specs portable#
Template:Expand For the military weapon, see Anti-Aircraft File:Duracell AA.jpg A Duracell AA alkaline battery File:NiMH 2500mAh.jpg Rechargable AA batteriesĪn AA battery ( Template:Pronounced or Template:IPA) is a dry cell-type battery commonly used in portable electronic devices.
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