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Kind of baked, as you can get a solar panel thing to plug into your lighter socket to charge up the whole car battery. |
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What [UnaB] said; and anyway, why? The alternator is producing power all the time the engine's running, so why not just use it? |
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Well, it would save some miniscule amount of fuel, yes? (sidenote: I have left my headlights on for over 8 hours and still been able to start the car [albeit with some slow cranking]). |
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[bristolz]: There would be no fuel saving at all. Alternators are rated to produce more power than required, and the output is 'governed' by the control circuitry, so there is usually spare capacity. There would, theoretically, be a minuscule reduction in driving effort if the alternator were run at a slightly slower speed, but this is negligible anyway because the moving parts of an alternator are not in contact with each other. |
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[UnaB]: Yeah, and I bet Tesla thought so too. |
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