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Old 11-29-2010, 01:45 PM   #26 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
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Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
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Actually a cars battery and electrical system is about 13V to 14V. So 6 amps is about 80 Watts. Also factoring in alternator efficiency should be done.

80/745.7 = 0.11 (0.10728)

0.10728/ .7 = 0.153 HP

In reality it would be more HP than this because I used a very high value for alternator efficiency.
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