OT: soldering leads to coin cell batteries

[John Ferguson-2]

Does anyone here have experience soldering leads to coin cell batteries?
My Compaq Armada M300 needs a new cmos battery.  the present one is a 2032 with 2 leads and a molex plug.

my scheme is to put the needle point on my trusty WTCP, remove the leads from the old battery, sand them and tin them and using the flux I used for the smt project, quickly as in QUICKLY touch the point to the leads.

Why not?

AI4TO  John Ferguson m/v arcadian


     
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[Mike Reublin]

John - If that doesn't work out, take a look here.

http://www.batterybob.com/category.asp?cat=9024
SKU #: 399040
SKU #: 399039

73, Mike NF4L

John Ferguson wrote:

> Does anyone here have experience soldering leads to coin cell batteries?
> My Compaq Armada M300 needs a new cmos battery.  the present one is a 2032 with 2 leads and a molex plug.
>
> my scheme is to put the needle point on my trusty WTCP, remove the leads from the old battery, sand them and tin them and using the flux I used for the smt project, quickly as in QUICKLY touch the point to the leads.
>
> Why not?
>
> AI4TO  John Ferguson m/v arcadian
>
>
>      
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> Elecraft mailing list
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>  

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[Ken Alexander-2]

Hi John,

If the leads on the existing cells are thin metal strips then they probably won't come off with a soldering iron.  They're usually welded on during the manufacturing process.

You might try Mouser or Digi-Key to see if you can find a battery holder it would slip into.  The holder would have leads that are easy to connect to.

73,

Ken Alexander
VE3HLS


--- On Sat, 12/19/09, John Ferguson <[hidden email]> wrote:

> From: John Ferguson <[hidden email]>
> Subject: [Elecraft] OT: soldering leads to coin cell batteries
> To: [hidden email]..net
> Date: Saturday, December 19, 2009, 2:35 PM
> Does anyone here have experience
> soldering leads to coin cell batteries?
> My Compaq Armada M300 needs a new cmos battery.  the
> present one is a 2032 with 2 leads and a molex plug.
>
> my scheme is to put the needle point on my trusty WTCP,
> remove the leads from the old battery, sand them and tin
> them and using the flux I used for the smt project, quickly
> as in QUICKLY touch the point to the leads.
>
> Why not?
>
> AI4TO  John Ferguson m/v arcadian
>
>
>      
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[John Young-11]

I salvage the holders from old computer mother boards.  Saves risking
explosion of the coin cell

73  John

--
John D Young
WA8KNE
ETC USN retired

On Sat, Dec 19, 2009 at 10:11 AM, Ken Alexander <[hidden email]>wrote:

>
> Hi John,
>
> If the leads on the existing cells are thin metal strips then they probably
> won't come off with a soldering iron.  They're usually welded on during the
> manufacturing process.
>
> You might try Mouser or Digi-Key to see if you can find a battery holder it
> would slip into.  The holder would have leads that are easy to connect to.
>
> 73,
>
> Ken Alexander
> VE3HLS
>
>
> --- On Sat, 12/19/09, John Ferguson <[hidden email]> wrote:
>
> > From: John Ferguson <[hidden email]>
> > Subject: [Elecraft] OT: soldering leads to coin cell batteries
> > To: [hidden email]..net
> > Date: Saturday, December 19, 2009, 2:35 PM
> > Does anyone here have experience
> > soldering leads to coin cell batteries?
> > My Compaq Armada M300 needs a new cmos battery.  the
> > present one is a 2032 with 2 leads and a molex plug.
> >
> > my scheme is to put the needle point on my trusty WTCP,
> > remove the leads from the old battery, sand them and tin
> > them and using the flux I used for the smt project, quickly
> > as in QUICKLY touch the point to the leads.
> >
> > Why not?
> >
> > AI4TO  John Ferguson m/v arcadian
> >
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[oe9fwv]

hi John,

John Ferguson schrieb am 19 Dec 2009 um 6:35:

> Does anyone here have experience soldering leads to coin cell batteries? My

yes I have :-(

> Compaq Armada M300 needs a new cmos battery.  the present one is a 2032
> with 2 leads and a molex plug.

> my scheme is to put the needle point on my trusty WTCP, remove the leads
> from the old battery, sand them and tin them and using the flux I used for
> the smt project, quickly as in QUICKLY touch the point to the leads.

I do not don't recommend it, although it might work. But it will heat up
the battery and you must avoid by all means that solder flows around the
edge of the battery and shortens it. When I once tried it the coin cell
exploded in my fingers and since that time I know what tinnitus is.

You might find the leaded cmos battery as a spare part or maybe you have a
dealer around who has the equipment to weld leads to a coin cell. (we have
such a dealer 30km away).
Another possibility: maybe you have enough room to insert a battery holder
somewhere in the computer?

73! de Werner OE9FWV



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