Thanks, Glenn.
You explained much better than I did why a big 12v battery may work where a
little one won't. The effect of the (decreased) internal resistance works
mathematically, whereas the increased amp-hour capacity (as I suggested)
doesn't really find a good mathematical basis as the "answer".
Russ, #1226B
-----Original Message-----
From: Glenn Ridlen [mailto:gridlen@yahoo.com]
Sent: Sunday, January 05, 2003 11:17 AM
To: ardunbill@webtv.net; Russel Mack; land-speed@autox.team.net
Subject: RE: Topic Ideas
All batteries have some internal resistance. Bigger ones usually have less
than little ones. When you connect two batterys in parellel that resistance
is cut in half. That resistance is part of the circuit just like external
resistance and when you connect to a big load which requires lots of amps
the voltage drop across the internal resistance becomes significant and it
is subtracted from the voltage that the battery puts out. Remember V=IR
ardunbill@webtv.net wrote:
the batteries are wired to keep the 12v system, plus to
plus, minus to minus; Bill, if that was my car, I'd
put the biggest battery I could get in there, to crank that baby!" And
he was right, the biggest CCA battery available cranked it and ran it
better than a smaller CCA alternative. Bill
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