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<font size=3>OK, I accept what you say about Lipos. Bit I know
NiCds are not to be tossed, nor cells with lead in them. I still
don't believe that lithium gong into the ecosystem is safe,
however...I'll do mine my way.<br><br>
At 11:22 AM 8/30/2009, you wrote:<br>
</font><blockquote type=cite class=cite cite="">
<font face="Arial, Helvetica" size=2>The research I did says the chemical
properties of a lipo break down on full discharge to a state where they
are not environmentally harmful. However, if you don't agree,
physically disposing of the discharge lipos in a environmentally 'safe'
certainly will be the safest way to get rid of them. <br>
<br>
Don<br>
<br>
In a message dated 8/30/2009 8:00:17 A.M. Pacific Daylight Time,
chuenkan@comcast.net writes:<br>
</font>
<dl>
<dd><font face="Arial, Helvetica" size=5 color="#FF0000">You do NOT
"just throw rechargeable batteries into the
trash".</b></font><font face="Arial, Helvetica" size=3> <br><br>
<dd> Cadmium and lithium are heavy metals that cause harm to
biological systems when ingested improperly -- i.e. from seeping into the
water table from landfills. Lithium is used in SMALL QUANTITIES to
treat some kinds of mental disorders, but that is under rigid
manufacturing and dosing conditions. Lead is also a heavy metal,
that is why there is an extra charge when one buys a car battery without
a "trade-in". <br><br>
<dd>I was in RadShack the other day, and we happened to start talking
about recycling these batteries -- they will take ANY rechargeable
battery except auto batteries, including our R/C NicCads and Lipos, with
no charge, and send them to a proper recycling center. You can also
usually take them to local govt. recycling centers for no charge.
Here in Oak Ridge, TN, every Wed and one Saturday per month the center is
open for all kinds of hazardous items -- old PCs and TVs, paint,
florescent bulbs, and on, and on.<br><br>
<dd>PLEASE recycle - not because of tree-hugging, but for human and
animal safety...<br><br>
<dd>At 10:16 AM 8/30/2009, you wrote:<br>
</font><blockquote type=cite class=cite cite="">
<dd><font face="Arial, Helvetica" size=2>There are many ways to drain the
battery down to safe levels. I have heard the lipos are 'safe'
anywhere below 2V per cell, however, I figure as long as I have something
draining them, I just leave them on the load until they are basically
'dead'.<br>
<dd> <br>
<dd>For anything up to 3 cells, I use an automobile tail light
bulb. Just solder 2 leads onto the bulb at the 2 contact points and
clip the other ends onto the battery leads. For a 5 cell pack, I
would use 2 bulbs in series. Put them in a safe area, clip the
bulbs on and leave them for a couple days. Check the voltage from
time to time and when it gets down to about zero, just throw the battery
in the trash.<br>
<dd> <br>
<dd>I tried the salt water bath approach and it didn't do anything for
me. After a couple days, the voltage had declined very little so I
took the light bulb approach. Actually anything that puts a load on
the batteries will work. A large resistor, light bulb, old brushed
motor, etc.<br>
<dd> <br>
<dd>Don<br>
<dd> <br>
<dd>In a message dated 8/30/2009 6:10:08 A.M. Pacific Daylight Time,
Snaproll4@aol.com writes:</font>
<dl>
<dd><font face="Arial, Helvetica" size=3>I have a Li-Po pack(5000) that
needs to be thrown away. It does not appear to be physically
damaged, but I need to know about the voltage. How low should I
discharge it and I how do I do that? My TP charger would take it
down to 3.3 volts/cell.<br>
<dd>
<dd>TIA.<br>
<dd>
<dd>Steve<br><br>
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<dd>--></font><font face="Arial, Helvetica" size=3 color="#800000">
There are only two types of aircraft -- fighters and targets.<br><br>
</i></b></font>
<dd>Phil Spelt, Webmaster & Past President, Knox County Radio Control
Society, Inc.<br>
<dd> URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com</a><br>
<dd>AMA--1294, Scientific Leader Member, SPA--177<br>
<dd> My URL:
<a href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">
http://mywebpages.comcast.net/~chuenkan/</a><br>
<dd> (865) 435-1476 v (865) 604-0541
c <font face="Arial, Helvetica" size=2><br><br>
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<b><i>--></font><font face="Arial, Helvetica" size=3 color="#800000">
There are only two types of aircraft -- fighters and targets.<br><br>
</i></b></font><font size=3>Phil Spelt, Webmaster & Past President,
Knox County Radio Control Society, Inc.<br>
URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com<br>
</a>AMA--1294, Scientific Leader Member, SPA--177<br>
My URL:
<a href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">
http://mywebpages.comcast.net/~chuenkan/<br>
</a> (865) 435-1476 v (865) 604-0541
c </font></body>
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