<P> An AA cell measures 49.2--50.5 mm (1.94--1.99 in) in length, including the button terminal--and 13.5--14.5 mm (0.53--0.57 in) in diameter . The positive terminal button should be a minimum 1 mm high and a maximum 5.5 mm in diameter, the flat negative terminal should be a minimum diameter of 7 mm . 14500 Lithium Batteries are longer if they feature a protection circuit up to 53 mm . </P> <P> Alkaline AA cells have a weight of roughly 23 g (0.81 oz), lithium AA cells around 15 g (0.53 oz), and rechargeable Ni - MH cells around 31 g (1.1 oz). </P> <P> Primary (non-rechargeable) zinc--carbon (dry cell) AA batteries have around 400--900 milliampere hours capacity, with measured capacity highly dependent on test conditions, duty cycle, and cut - off voltage . 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 2850 mAh cost more than zinc - chloride batteries, but hold additional charge . </P> <P> Non-rechargeable lithium iron disulfide batteries are manufactured for devices that use a lot of power, such as digital cameras, where their high cost is offset by longer running time between battery changes and more constant voltage during discharge . Another advantage of lithium disulfide batteries compared to alkaline batteries is that they don't tend to leak . This is particularly important in expensive equipment, where a leaking alkaline battery can cause damage to the point of requiring replacement of the equipment . Lithium iron disulfide batteries are intended for use in equipment compatible with alkaline zinc batteries . Lithium - iron disulfide batteries can have an open - circuit voltage as high as 1.8 volts, but the closed - circuit voltage decreases, making this chemistry compatible with equipment intended for zinc - based batteries . A fresh alkaline zinc battery can have an open - circuit voltage of 1.6 volts, but an iron - disulfide battery with an open - circuit voltage below 1.7 volts is entirely discharged . </P>

How many amps does 4 aa battery put out
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