[NSRCA-discussion] Soldering to LiPo battery tabs

[ronlock at comcast.net]

Ive had OK success with alminum solder paste. 
Ron Lockhart 

----- Original Message ----- 
From: "Ed Alt" <ed_alt at hotmail.com> 
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org> 
Sent: Saturday, August 22, 2009 9:58:37 AM (GMT-0500) Auto-Detected 
Subject: Re: [NSRCA-discussion] Soldering to LiPo battery tabs 




Thanks. 





From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Stuart Chale 
Sent: Saturday, August 22, 2009 9:11 AM 
To: General pattern discussion 
Subject: Re: [NSRCA-discussion] Soldering to LiPo battery tabs 



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 
http://www.cheapbatterypacks.com/?sid=2036126&pgid=bldg 

And it is still beautiful out :) 
Stu 

Ed Alt wrote: 

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? 



Thanks 

Ed 
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