<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Ive had OK success with alminum solder paste.<br>Ron Lockhart<br><br>----- Original Message -----<br>From: "Ed Alt" <ed_alt@hotmail.com><br>To: "General pattern discussion" <nsrca-discussion@lists.nsrca.org><br>Sent: Saturday, August 22, 2009 9:58:37 AM (GMT-0500) Auto-Detected<br>Subject: Re: [NSRCA-discussion] Soldering to LiPo battery tabs<br><br>
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<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Thanks. </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: windowtext;">From:</span></b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif"; color: windowtext;">
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Stuart
Chale<br>
<b>Sent:</b> Saturday, August 22, 2009 9:11 AM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] Soldering to LiPo battery tabs</span></p>
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<p class="MsoNormal"> </p>
<p class="MsoNormal">Yes it is aluminum. Generally one tab is nickel plated
I believe which is easy to solder to and the other is aluminum. I bought
some special flux and solder which does work, I think the zinc flux here
is the same, used with zinc solder<br>
<a href="http://www.cheapbatterypacks.com/?sid=2036126&pgid=bldg" target="_blank">http://www.cheapbatterypacks.com/?sid=2036126&pgid=bldg</a><br>
<br>
And it is still beautiful out :)<br>
Stu<br>
<br>
Ed Alt wrote: </p>
<p class="MsoNormal">I’m having trouble getting ordinary silver bearing solder to
flow and bond with the metal tabs at the end of some 5000 mAh LiPo cells.
What’s interesting is that I can re-solder to any spot where it was originally
soldered by the manufacturer, but I can’t start a new solder joint. I’ve
tried extensive cleaning of the metal, no luck. Does anyone know what the
material is that those tabs are made from? Is it an aluminum alloy of
some type?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks</p>
<p class="MsoNormal">Ed</p>
<pre> </pre><pre style="text-align: center;">
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