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Message: <blockquote data-quote="stormsearch" data-source="post: 6681644" data-attributes="member: 615664"><p>An alternator is only so efficient, 50 - 70% depending your model.  Assume that your alternator is 50% efficient, rated at 100A.  For the alternator to produce 50A @ 14v, it is producing that same amount of heat (efficiency loss mainly produces heat but there are mechanical losses also).  So 50A x 14 V = 700W of heat output.  If you drive your alternator to the max at 100A, it will produce 1400W of heat energy.  Just like the vast majority of electroncis, heat is the number one killer.  If I saw my headlights dimming every time I slowed down, I would be worried or at least not take an extended trip until remedied.</p></blockquote><p></p>

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