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- Newsgroups: alt.folklore.science
- Path: sparky!uunet!wupost!sdd.hp.com!hp-cv!hp-pcd!hpcvaac!billn
- From: billn@hpcvaac.cv.hp.com (bill nelson)
- Subject: Re: Car Batteries die in the Winter - Why?
- Message-ID: <1992Dec25.233942.25898@hpcvaac.cv.hp.com>
- Organization: Hewlett-Packard Company, Corvallis, Oregon USA
- References: <BzD4pI.JE5@gabriel.keele.ac.uk>
- Date: Fri, 25 Dec 1992 23:39:42 GMT
- Lines: 15
-
- csa09@seq1.keele.ac.uk (Paul Singleton) writes:
- : From article <Bz7tFD.CF6@ais.org>, by draper@ais.org (Patrick Draper):
- :
- : > In cold weather chemical processes generally proceed at a slower rate. A
- : > marginal battery in warm weather might not crank out enough juice to turn an
- : > engine over in cold weather.
- :
- : But wouldn't it warm up as soon as the starter tried to draw current (a
- : couple of hundred amps I believe) from it? Does cold affect its stored
- : energy, or just the internal impedance? Does the EMF depend on temperature?
-
- Neither, really. It affects how fast the chemical reaction can take place.
- The energy is still there, it just is not produced rapidly enough.
-
- Bill
-