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<DIV><FONT face=Arial size=2>Yup my local Radio Shack will take just about any
rechargable battery I bring them. I just remove the connectors and tape up the
leads to make sure they don't accidentally touch something. I keep a plastic box
in the shop for old batteries and when it gets full I just bring them all down
to the Shack. Easy.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>John Pavlick<BR><A
href="http://www.idseng.com">http://www.idseng.com</A></FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=chuenkan@comcast.net href="mailto:chuenkan@comcast.net">Phil
Spelt</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 30, 2009 10:59
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Li-Po
Question -- SAFETY!!!!</DIV>
<DIV><BR></DIV><FONT color=#ff0000 size=5><B>You do NOT "just throw
rechargeable batteries into the trash".</B></FONT><FONT size=3>
<BR><BR> 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>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>PLEASE recycle - not because of tree-hugging, but for human and
animal safety...<BR><BR>At 10:16 AM 8/30/2009, you wrote:<BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite"><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> <BR>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> <BR>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> <BR>Don<BR> <BR>In a message dated 8/30/2009 6:10:08 A.M.
Pacific Daylight Time, Snaproll4@aol.com writes:<BR></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><BR>
<DD>TIA.<BR>
<DD><BR>
<DD>Steve<BR><BR>
<HR>
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<DD>_______________________________________________<BR>
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<FONT size=3><BR><BR></DD></DL>
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_______________________________________________<BR>NSRCA-discussion mailing
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<P></X-SIGSEP><B><I>--></FONT><FONT face="Arial, Helvetica" color=#800000
size=3> 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>
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