Re: Computer on a car battery

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Article #6993

#6993

From: Bob Hale
Date: Mon, 31 Aug 1992 19:57

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In article <IISAKKIL.92Aug30164509@vipunen.hut.fi> iisakkil@vipunen.hut.fi (Mika Iisakkila) writes:
>
>All normal car batteries sold here have something like "60 Ah" printed
>in huge letters on the side. I have no idea of the load current for
>which this holds.

The standard for capacity rating is for a discharge current of 0.1C
for this type of battery.  Thus, 6 amps for 10 hours when the battery
is new and hasn't aged any.

However, a car battery is a lousy source for continuous drain or deep
draw applications; the life of the battery will be short.  For a
continuous draw application an RV house battery is a much better
choice.  These are intended to be run down to nearly discharged
without suffering unduly.  However, they are *not* good for starting
a car engine because their peak current capability is limited.

Bob Hale                                      ...!ucsd!btree!hale
...!btree!hale@ucsd.edu                       ...!ucsd!btree!hale@uunet.uu.net

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Message-ID: <1992Aug31.195748.7698@btree.uucp>

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arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!btree!hale

References: <1992Aug30.035542.21557@nuchat.sccsi.com> <IISAKKIL.92Aug30164509@vipunen.hut.fi>

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Newsgroups: sci.electronics
Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!network.ucsd.edu!btree!hale
From: hale@btree.uucp (Bob Hale)
Message-ID: <1992Aug31.195748.7698@btree.uucp>
Date: Mon, 31 Aug 92 19:57:48 GMT
Organization: Brooktree Corporation
Subject: Re: Computer on a car battery
References: <1992Aug30.035542.21557@nuchat.sccsi.com> <IISAKKIL.92Aug30164509@vipunen.hut.fi>
Distribution: usa
Organization: Brooktree Corporation, San Diego
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