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Old 09-11-2010, 11:24 AM   #216 (permalink)
Automcdonough
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Join Date: Jul 2010
Location: Cleveland, OH
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Yeah most small car battery chargers are notoriously inefficient, half the time it's just a step-down transformer and linear regulator! A lot of them don't even have a cap to smooth out the output, they just expect the battery to deal with it. Simple, cheap, and reliable but when it comes to efficiency it's the worst.
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