How to attach leads straight to battery?

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I see that Radio Shack has a clip that holds such a battery but I
think it's too thick to fit. I just tore apart a 16 year old
computetr to get it's battery holder, but it was defintiely too thick
(Does anyone want a kit to make a 16 year-old computer?)

Thanks.

On Sat, 23 Jul 2011 14:52:40 -0400, micky
wrote:

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I didn't think solderign would work, but it occurs to me that
somewhere I have a mini torch, with one or two little tanks of gas, 2
or 3" tall, that is supposed to get very hot at a small place. Maybe
I could solder the wires to the battery with that???


I see that Radio Shack has a clip that holds such a battery but I
think it's too thick to fit. I just tore apart a 16 year old
computetr to get it's battery holder, but it was defintiely too thick
(Does anyone want a kit to make a 16 year-old computer?)

Thanks.

"micky" wrote in message
...

On Sat, 23 Jul 2011 14:52:40 -0400, micky
wrote:

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I didn't think solderign would work, but it occurs to me that
somewhere I have a mini torch, with one or two little tanks of gas, 2
or 3" tall, that is supposed to get very hot at a small place. Maybe
I could solder the wires to the battery with that???

Can you confirm that the Thinkpad manual nowhere says
whether and how to replace the battery?

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)

On Sat, 23 Jul 2011 15:21:53 -0400, "Don Phillipson"
wrote:

Can you confirm that the Thinkpad manual nowhere says
whether and how to replace the battery?

....or a picture of a CMOS battery with wires attached directly.

Thinking the OP is a Trollasaurs ©

On Sat, 23 Jul 2011 15:21:53 -0400, "Don Phillipson"
wrote:

"micky" wrote in message
.. .

On Sat, 23 Jul 2011 14:52:40 -0400, micky
wrote:

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I didn't think solderign would work, but it occurs to me that
somewhere I have a mini torch, with one or two little tanks of gas, 2
or 3" tall, that is supposed to get very hot at a small place. Maybe
I could solder the wires to the battery with that???

Can you confirm that the Thinkpad manual nowhere says
whether and how to replace the battery?
I've done it (in a pinch) with the silver defroster grid repair, or
silver Printed circuit repair pen to make the contact, backed up with
a chunck of appropriately sized shrink tubing to give mechanical
strength.. It is NOT robust - but works in a pinch.

micky wrote:
On Sat, 23 Jul 2011 14:52:40 -0400, micky
wrote:

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I didn't think solderign would work, but it occurs to me that
somewhere I have a mini torch, with one or two little tanks of gas, 2
or 3" tall, that is supposed to get very hot at a small place. Maybe
I could solder the wires to the battery with that???


I see that Radio Shack has a clip that holds such a battery but I
think it's too thick to fit. I just tore apart a 16 year old
computetr to get it's battery holder, but it was defintiely too thick
(Does anyone want a kit to make a 16 year-old computer?)

Thanks.


They use spot welds for a reason. A spot welder wouldn't
do nearly as much thermal damage to the CR2032 as soldering would.
It would probably ruin whatever functions as a separator between
the two halves of the battery.

None of the datasheets I've downloaded for CR2032, list short
term temperature as a parameter (like whether it could support
a solder profile). The max operating temp is listed as 60C or
70C, which isn't nearly enough for soldering, even with low
temp alloys. And the cell surface could be stainless, meaning
you'd need a solder that "sticks" to that stuff. If the solder
had a bit of silver added to it, that would probably push
the melt point too high.

You could think a bit more creatively than that. For example, how many
"holes or storage spaces" are currently available or unused on the unit.
Perhaps you can craft a 3V source, using a couple regular dry cells.
At Radio Shack, I could pick up a two cell holder, two dry cells
(1.5V each), then use the wire on the existing dead CR2032 assembly,
and solder that wire to the tabs on the plastic battery holder. It's
just a matter of routing the wire inside the laptop, using any
available holes. The battery pack would hold you over until the
new CR2032 assembly comes in the mail.

You could build a regulated circuit to run off the main battery,
but then, if left that way, you could dangerously discharge the
main battery. Some battery chargers will not charge a laptop
battery, if the battery ever heads below a certain threshold.

I think it's slightly safer, to just build a battery source
using dry cells.

Have you ever tried to find a 3.0V output three terminal regulator
in town ? That is probably a mail order item as well, and will
take just as long to get here, as the pigtailed CR2032 will.
The battery holder and dry cells, I can think of two stores in
town that can provide them for me.

Paul

On 7/23/2011 3:11 PM, micky wrote:
On Sat, 23 Jul 2011 14:52:40 -0400,
wrote:

It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I didn't think solderign would work, but it occurs to me that
somewhere I have a mini torch, with one or two little tanks of gas, 2
or 3" tall, that is supposed to get very hot at a small place. Maybe
I could solder the wires to the battery with that???


I see that Radio Shack has a clip that holds such a battery but I
think it's too thick to fit. I just tore apart a 16 year old
computetr to get it's battery holder, but it was defintiely too thick
(Does anyone want a kit to make a 16 year-old computer?)

Thanks.


The connection tabs on such cells is done with a specialized spot welding
machine which avoids excessive heating to the metal which will at the very
least shorten the life of the cell, will sometimes kill it entirely, or
sometimes yield a nice explosion (especially with lithium I suspect).

Probably something on this page:

http://shopping.microbattery.com/s.n...ategory.708/.f

would be of help in your quest to connect.

Hmm,
Look hard you can find a battery with soldering tab.

micky wrote:
It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.

I don't have time to wait for a new one by mail, plus I have some
CR2032's in my fridge. The flat things that look like litttle
frisbees.

The current one has the wires connected to metal tabs stuck (welded?)
to the battery on both sides. Is there a way I can do this without
exploding or otherwise ruining the battery???????

I see that Radio Shack has a clip that holds such a battery but I
think it's too thick to fit. I just tore apart a 16 year old
computetr to get it's battery holder, but it was defintiely too thick
(Does anyone want a kit to make a 16 year-old computer?)

Thanks.
Hi,You can find a battery with soldering tabs. I am a LONG term TP user.
4 of them in the house.

micky wrote:
It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.


The battery is not involved in the boot process.

On Sat, 23 Jul 2011 16:34:10 -0500, "HeyBub"
wrote:

micky wrote:
It seems my IBM Thinkpad's CMOS battery has died, and it's know that
it won't boot wihtout it.


The battery is not involved in the boot process.


Except to maintain date and time. The machine will run with the wrong
date and time.

Lacking a battery, one can enter the date / time or hit the enter key
to skip it.

POST is coming from the EPROM - battery not needed.