Why Battery rated in Ah (Ampere hour) and not in VA.
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Battery stores charge in the form of chemical energy and then converts it into electrical energy to utilize for a specific time. The amount of available charge is the capacity of a cell or battery which may be expressed in Ah (Ampere-hour). Moreover, in a charged battery, the numbers of molecules are...
read more Battery stores charge in the form of chemical energy and then converts it into electrical energy to utilize for a specific time. The amount of available charge is the capacity of a cell or battery which may be expressed in Ah (Ampere-hour). Moreover, in a charged battery, the numbers of molecules are limited to create a flow of electron in electric circuits, so, there must be a limited number of electrons in a cell/battery which they motivate through a circuit tofully discharge. Now we have the option to rate the battery capacity in Number of flowing electrons for a specific time, but, it would be a headache, because there are a vast number of electrons in it. So we have another option (1C (Coulomb) = 6.25 x 1018electrons, or 6,250,000,000,000,000,000 electrons. In addition, 1A (Ampere) = 1 coulomb of electrons per second and, 1h = 3600 Seconds Therefore; 1Ah = (1A) x (3600s) = (C/s) x (3600s) = 3600 C. ? A (1 Ampere) = 1 Coulomb per second = C/s read less
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The amp-hour is a unit of battery energy capacity, equal to the amount of continuous current multiplied by the discharge time, that a battery can supply before exhausting its internal store of chemical energy,and this cannot be measured by VA.
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The amp-hour is a unit of battery energy capacity, equal to the amount of continuous current multiplied by the discharge time, that a battery can supply before exhausting its internal store of chemical energy. and this cannot be measured by VA
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Battery Stores Energy , which it delivers at constant Voltage. so technically Ah is VAh ( unit of Energy), while VA is unit of Power not energy.
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Its actually not the power that is given as the rating but the energy stored in it. Amp-hour is a unit that suggests that this device can provide a certain ampere of current for this many hours in its lifetime.
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Ah stands for Ampere hour and it has dimensions of charge as you can see from Q= It , whereas VA would be a unit of electrical power, which hasn"t much relevance for a battery. Don't get me wrong, I'm not at all saying a battery having 100Ah rating means it has charge stored in it; rather the 100Ah...
read more Ah stands for Ampere hour and it has dimensions of charge as you can see from Q= It , whereas VA would be a unit of electrical power, which hasn"t much relevance for a battery. Don't get me wrong, I'm not at all saying a battery having 100Ah rating means it has charge stored in it; rather the 100Ah rating means the battery can supply 100 A to a load for 1hour . read less
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