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<blockquote data-quote="WHATJUSTHAPPENd" data-source="post: 6259879" data-attributes="member: 613855">Your Batt will only output to a fraction of a volt when there are no forces to recharge it.The voltage regulator is the reason the above diagrams work. In the metaphor, it would be the determining factor in how high on the tank the faucet is located.The electrical system of your car is designed to drop output from your battery at a certain point to avoid killing the alt. At this point you experience a voltage drop effectively allowing your battery to recharge enough to avoid damage.This process does not happen when the alternator is not running because now the line between the battery and the amp is a simple circuit. Just like a light bulb attached to a battery. The flow of energy only goes one way instead of being balanced according to resistance 4 ways.More poorly drawn examples:Now bear with me, the resistance values are not to scale and will vary greatly, this is just to give you an idea of what I&#039;m talking about, and the reason A healthy battery will not completely discharge while the alt. is running, but it will when it&#039;s not.<img src="http://img193.imageshack.us/img193/236/amps.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="WHATJUSTHAPPENd, post: 6259879, member: 613855"] Your Batt will only output to a fraction of a volt when there are no forces to recharge it. The voltage regulator is the reason the above diagrams work. In the metaphor, it would be the determining factor in how high on the tank the faucet is located. The electrical system of your car is designed to drop output from your battery at a certain point to avoid killing the alt. At this point you experience a voltage drop effectively allowing your battery to recharge enough to avoid damage. This process does not happen when the alternator is not running because now the line between the battery and the amp is a simple circuit. Just like a light bulb attached to a battery. The flow of energy only goes one way instead of being balanced according to resistance 4 ways. More poorly drawn examples: Now bear with me, the resistance values are not to scale and will vary greatly, this is just to give you an idea of what I'm talking about, and the reason A healthy battery will not completely discharge while the alt. is running, but it will when it's not. [IMG]http://img193.imageshack.us/img193/236/amps.png[/IMG] [/QUOTE]

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