a aa battery has how many volts
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. Minimum practical voltage of AA battery. Dan Miller, Mar 12, 1998; 09:56 p.m. During my last vacation I shot quite a few rolls, and went through my share of batteries for cameras, flashes, and motordrives. AA batteries are common in portable electronic devices. An AA battery is composed of a single electrochemical cell that may be either a primary battery (disposable) or a rechargeable battery. The exact terminal voltage and capacity of an AA size battery depends on cell chemistry. AA batteries account for over 50% of general battery sales. In all the excitement, I inadvertently mixed the fresh. AA batteries with the spent ones. I'd like to determine which ones are good by measuring each of their voltages with a voltmeter. I'd like to know the minimum voltage below which a AA (Duracell, Energizer) battery is of little practical use. This will be my criterion for getting rid of those cells. The question should be how many amp-hours in a battery. In a small batt. like a 9V, this is measured in milli-amp hours (mAh), with 0.5 amp hours equaling 500 mAh. This means … the battery could power a 0.5 amp load for 1 hour. 12 volts nominal.   A 12 volt car lead-acid battery will measure about 12.2 at full charge and no load. Car charging systems usually keep the voltage around 14 when the car … is running, though it might drop down if accessories are in use (lights, heater fan, wipers). Everyone says a car battery's voltage is 12 volts but it varies according to how full up it is with electrical charge. A fully-charged car battery in as-new condition can ha … ve a voltage of 12.6 volts when it is not delivering any load current. Some import cars only carry a nominal six volts. It will read 12.6 volts with a digital volt meter if it is fully charge and the engine is not running. 12.4 at 75% charge. 1 You can only upload photos smaller than 5 MB. 2  You can only upload videos smaller than 600MB. 3  You can only upload a photo (png, jpg, jpeg) or a video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm). 4  You can only upload a photo or a video. Thus, batteries may have lots of life left for other uses, but the camera won't work. I have a 2.92 volt lithium that doesn't start my P & S (3 volt battery). 1.2 to 1.4 volts may still offer lots of life in micro-power electronics. Alkaline AA cells have a weight of roughly 23 g (0.81 oz), lithium AA cells have a mass around 15 g (0.53 oz), and rechargeable NiMH cells around 31 g (1.1 oz).
A fresh alkaline zinc battery can have an open-circuit voltage of 1.6 volts.