<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>I concur. thank you.</div><div><br></div><div>db<br></div><div><br></div><div><br>Dan Brown<br>Foxfire Energy Corp.<br>Renewable Energy Systems<br>(802)-483-2564<br><a href="http://www.Foxfire-Energy.com">www.Foxfire-Energy.com</a><br>NABCEP #092907-44</div><div><br><br></div>
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-------- Original Message --------<br>
Subject: Re: [RE-wrenches] battery venting<br>
From: "Jeff Yago" <<a href="mailto:jryago@dtisolar.com">jryago@dtisolar.com</a>><br>
Date: Wed, January 04, 2012 3:40 pm<br>
To: "'RE-wrenches'" <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
<br>
Here is another issue related to this thread. <br>
<br>
Yes, you can build sealed battery boxes and add vent pipes, fans, whatever,<br>
but battery terminals and battery cables installed in a confined box will<br>
have far more problems with terminal corrosion due to more concentrated<br>
forms of gasses and a mist of acid moisture that will settle on all<br>
surfaces.<br>
<br>
We have been called in to repair off-grid systems that used battery boxes<br>
only a few years old that had battery cable ends and battery terminals<br>
almost totally dissolved, yet, we have the same type batteries and cables<br>
installed in larger well-ventilated battery rooms that you could eat off of<br>
the floor 10 years later.<br>
<br>
I say that battery boxes should be a last resort and used only when there is<br>
no other way, and then you better make sure there are multiple sources of<br>
adequate ventilation air.<br>
<br>
Jeff Yago<br>
DTI Solar Inc.<br>
<br>
<br>
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