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<DIV><FONT face=Arial size=2>...."Until now"?.....</FONT></DIV>
<DIV><FONT face=Arial size=2>For proper VRLA battery charging, once it is
full, you MUST reduce the voltage. It does not matter that you are opportunity
charging. What if your turbine is making power 24/7? The voltage will still
need to be reduced after a few hours or have a fixed voltage setting.
</FONT><FONT face=Arial size=2>I don't think you are ungrateful but again I
encourage you to re-read this thread and the manufacturers instructions. It's
all there.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Larry</FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=hugh@scoraigwind.co.uk href="mailto:hugh@scoraigwind.co.uk">Hugh</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, April 28, 2011 2:04
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] AGM battery
charging, more details</DIV>
<DIV><BR></DIV>
<DIV>I am sorry if i seem ungrateful for the many useful ideas that have been
voiced. I suppose I just like to try to oversimplify things. At
present my over-simplification is to say that, for opportunity charging, the
only thing that really matters is not to exceed the temperature-compensated
absorption voltage. Until now I had imagined that it was
dangerous to prolong the absorption voltage stage. But maybe float is
not so important as making sure that the battery gets enough charge to prevent
premature failure. By the time the charging current has dropped to the
transition current level it is too low to do any damage and can be prolonged
indefinitely (until wind and sun stop anyway). This would not work in a
grid connected situation, but seems to fit for mine. I am sure you guys
will point out if I have got this wrong.</DIV><X-SIGSEP><PRE>--
</PRE></X-SIGSEP>
<DIV>Hugh Piggott<BR><BR>Scoraig<BR><A
href="http://www.scoraigwind.co.uk">http://www.scoraigwind.co.uk</A></DIV></BLOCKQUOTE></BODY></HTML>