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From: weverka@boulder.colorado.edu (Robert T. Weverka)
Newsgroups: sci.electronics
Subject: Re: Car Battery Rechargers
Message-ID: <27613@boulder.Colorado.EDU>
Date: 5 Oct 90 14:22:05 GMT
References: <1990Oct4.222556.20668@athena.mit.edu>
Sender: news@boulder.Colorado.EDU
Reply-To: weverka@kona.Colorado.EDU (Robert T. Weverka)
Organization: University of Colorado, Boulder
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A D battery has about 2 amp-hours at 1.5 volts.  If you put this into your
car battery most efficiently, and could retreave it without loss you would
get about 7 amp-minutes at 12 volts.  Your starter motor draws on the order
of 100 amps(depends on the car).  At best you could get a few seconds of
cranking power.