[RE-wrenches] Still walking it back
Mick Abraham
mick at abrahamsolar.com
Fri Nov 2 08:41:29 PDT 2012
Hi, Mechanix~ I'm sorry to add more "noise" to the List but I sort of
mis-spoke again.
Dan Lepinski @ Exeltech sent a mail to me Off List; below I am posting
the part of his
mail which addresses my latest faux pas:
+++++++++++++++++++++++++++++++++
"As battery state of charge increases (toward 100%), the internal resistance
actually goes *down* -- which is why you can get a very high short-circuit
current from a fully charged battery .. and a much less current from a
nearly dead one.
"What is happening instead is a voltage equilibrium -- that of the battery
becoming more equal with the voltage of the charging source. This is
what reduces the charge current flowing from a constant-voltage source
into the battery.
"Think of it this way: If you're adding air to a car tire, and have a compressor
that produces a maximum of 35 psi, as the tire pressure approaches 35 psi,
the air flow from the compressor to the tire will slow, and then eventually stop
when the two pressures become equal."
++++++++++++++++++++++++++++
That's all for now; thanks, Dan. Jolliness all around~
Mick Abraham, Proprietor
www.abrahamsolar.com
Voice: 970-731-4675
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