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Old 05-25-2009, 09:53 AM   #5 (permalink)
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You can use a lower voltage to charge a battery of a higher voltage, but you need a DC to DC converter to boost the lower voltage up. As you increase the voltage, you'll have less amperage, plus you take an efficiency loss at the dc to dc converter... But, you can do it.
Current project: A better alternator delete
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