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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#000000" vlink="#000000"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Old info.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You can check each cell at the balance connector …..<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Bradley Hand ITC";color:#1F497D'>Jay Marshall<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> NSRCA-discussion [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>atwooddon--- via NSRCA-discussion<br><b>Sent:</b> Monday, April 18, 2016 11:09 AM<br><b>To:</b> jaysgerber@earthlink.net; tewalker10@yahoo.com; nsrca-discussion@lists.nsrca.org<br><b>Subject:</b> Re: [NSRCA-discussion] Li-Po Battery disposal - Best way<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>The salt water bath approach has been floating around for quite some time, however, there is a<u> possible</u> issue with this approach. Here is a section of an article from a club newsletter describing the possible issue. <br><br>YMMV<br>Don<o:p></o:p></span></p><div><p class=MsoNormal><b><u><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Salt Water Bath.... NO!!!</span></u></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>There has been a discharge approach for lipos floating around the internet for quite some time. Somehow, it just won't die and go away so we will cover it here and maybe help someone reading this that thinks this will reliably discharge a lipo. Notice I said 'reliably'. The salt water bath approach 'might' work but there is no easy way to check whether it worked or not and you might be disposing a lipo you think is fully discharged but isn't.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>The theory..... Pure water will not conduct energy, in fact has almost infinite resistance. BUT, add some chemical like salt and it will conduct current very well. So, if we take water and add salt to it, drop a lipo pack in the salty water it should gradually/safely discharge the lipo to zero voltage over time by allowing current to flow between the positive and negative leads of the pack. Sounds good, right? Theoretically it should work... BUT it ignores the fact that the salty water will also cause a oxidation/corrosion process to occur as the energy flows across the connectors of the pack, including the aluminum connectors<u> inside</u> the pack. Over time, this oxidation/corrosion process eats away at the aluminum of the internal connectors of the lipo gradually dissolving it. Now, as soon as this process erodes the connector(s) to the point there is no connection between one or more of the cells of the lipo it will open the circuit and you will get a zero volt reading when you check the pack using the main leads. You can't see the internal connectors so you have no idea the reason you are getting a zero voltage reading externally is there is an 'open' in the internal circuit of the lipo pack. Of course, this might not occur and the salt water bath would be successful but you have no way of determining if it was actually successful without opening the pack up to verify each cell is zero voltage. So, that is the reason you shouldn't rely on the salt water bath to discharge lipo packs.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>-----Original Message-----<br>From: Jay Gerber <<a href="mailto:jaysgerber@earthlink.net"><span style='color:windowtext'>jaysgerber@earthlink.net</span></a>><br>To: 'Terrence Walker' <<a href="mailto:tewalker10@yahoo.com"><span style='color:windowtext'>tewalker10@yahoo.com</span></a>>; 'General pattern discussion' <<a href="mailto:nsrca-discussion@lists.nsrca.org"><span style='color:windowtext'>nsrca-discussion@lists.nsrca.org</span></a>>; atwooddon <<a href="mailto:atwooddon@aol.com"><span style='color:windowtext'>atwooddon@aol.com</span></a>><br>Sent: Mon, Apr 18, 2016 6:39 am<br>Subject: RE: [NSRCA-discussion] Li-Po Battery disposal - Best way<o:p></o:p></span></p><div id="AOLMsgPart_1.2_5717d7de-57c3-469f-a068-f98038dc0bb5"><div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'>For whatever it’s worth….If you can’t get to a battery disposal facility like Lowe’s, etc…..</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'>I have discharged batteries using a glass bowl (not metal) filled with a concentrated salt water solution. 2- 5S 5400 ma Lipos took about 2 days for them to get to 0.01 volts. Yesterday I discharged 2 4S 2200 Lipos in a day to 0.00 volts with the same process. No danger, just let them sit and maybe refresh the solution for the bigger batteries. Leave a little longer and they will go to 0.00 volts</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'>Strip the leads staggered and watch that the positive lead doesn’t get caked up in a day or so. It’s neat watching the bubbling taking place as the “electrons” flow out of the packs.</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'>Jay</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Arial","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> NSRCA-discussion [<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org?"><u><span style='color:blue'>mailto:nsrca-discussion-bounces@lists.nsrca.org</span></u></a>] <b>On Behalf Of </b>Terrence Walker via NSRCA-discussion<br><b>Sent:</b> Monday, April 18, 2016 12:44 AM<br><b>To:</b> <a href="mailto:atwooddon@aol.com"><u><span style='color:blue'>atwooddon@aol.com</span></u></a>; General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Li-Po Battery disposal - Best way</span><span style='color:black'><o:p></o:p></span></p></div></div></div><div><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p></div><div><div id="yui_3_16_0_ym19_1_1460945388519_27673"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Hello Don,</span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27671"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27653"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Long time no see. So I have an old 5000 10s flight pack that I want to fully discharge. How can a single 12v taillight bulb discharge this flight pack?</span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27783"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27779"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Enquiring minds want to know ...</span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_28024"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_28027"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>Terry </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27529"><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27533"><div id="yui_3_16_0_ym19_1_1460945388519_27532"><div id="yui_3_16_0_ym19_1_1460945388519_27531"><div id="yui_3_16_0_ym19_1_1460945388519_27530"><div class=MsoNormal align=center style='text-align:center;background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><hr size=1 width="100%" align=center></span></div><div><p class=MsoNormal style='background:white'><b id="yui_3_16_0_ym19_1_1460945388519_27745"><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'> atwooddon--- via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org"><u><span style='color:blue'>nsrca-discussion@lists.nsrca.org</span></u></a>><br><b>To:</b> <a href="mailto:ldiamond@diamondrc.com"><u><span style='color:blue'>ldiamond@diamondrc.com</span></u></a>; <a href="mailto:nsrca-discussion@lists.nsrca.org"><u><span style='color:blue'>nsrca-discussion@lists.nsrca.org</span></u></a> <br><b id="yui_3_16_0_ym19_1_1460945388519_27748">Sent:</b> Saturday, April 16, 2016 6:44 AM<br><b>Subject:</b> Re: [NSRCA-discussion] Li-Po Battery disposal - Best way</span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27625"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div id=yiv7382050446><div id="yui_3_16_0_ym19_1_1460945388519_27627"><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>The process I use is to fully discharge the pack using a automotive tail light bulb, strip the mail leads back a couple inches and twist them together then dispose of if in the trash. Fully discharged, lipos pose no environmental dangers.<br><br>Don</span><span style='color:black'><o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1460945388519_27803"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27805"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27807"><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27809"><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>-----Original Message-----<br>From: Larry Diamond via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org"><u><span style='color:blue'>nsrca-discussion@lists.nsrca.org</span></u></a>><br>To: 'General pattern discussion' <<a href="mailto:nsrca-discussion@lists.nsrca.org"><u><span style='color:blue'>nsrca-discussion@lists.nsrca.org</span></u></a>><br>Sent: Sat, Apr 16, 2016 6:24 am<br>Subject: [NSRCA-discussion] Li-Po Battery disposal - Best way</span><span style='color:black'><o:p></o:p></span></p></div><div id=yiv7382050446yqt65661><div id="yiv7382050446AOLMsgPart_1.2_5c877474-6b71-4a25-8196-adf911e0f804"><div id="yui_3_16_0_ym19_1_1460945388519_27813"><div id="yui_3_16_0_ym19_1_1460945388519_27812"><div id="yui_3_16_0_ym19_1_1460945388519_27811"><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>I have a LiPo 5s 5000mAh pack that has a dead cell (1.6v).</span><span style='color:black'><o:p></o:p></span></p></div></div><div id="yui_3_16_0_ym19_1_1460945388519_27815"><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>What is the best way to dispose of this battery?</span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal style='background:white'><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:black'>Larry Diamond</span><span style='color:black'><o:p></o:p></span></p></div></div></div></div></div></div><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank"><u><span style='color:blue'>NSRCA-discussion@lists.nsrca.org</span></u></a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank"><u><span style='color:blue'>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</span></u></a></span><span style='color:black'><o:p></o:p></span></p></div></div></div></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div><div id=yqt55889><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank"><u><span style='color:blue'>NSRCA-discussion@lists.nsrca.org</span></u></a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank"><u><span style='color:blue'>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</span></u></a></span><span style='color:black'><o:p></o:p></span></p></div></div><div style='margin-bottom:12.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'> </span><span style='color:black'><o:p></o:p></span></p></div></div></div></div></div></div></div></div></div></div></body></html>