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PICList Thread
'Looking for Lithium cells'
2002\08\28@030351 by Morgan Olsson

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Hi

Anybody knows where to get Lithium (rechargeable) (Li-ion) cells?

There is a large variety of charger chips available, and some IC manufacturers offer samples of them, (and of course we could also do the algorithem with the PIC...) but to get hold of the cells seem very hard.

I need it for a small light-weight solution, one cell and a few hundred mAh.

Ideas?

/Morgan

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2002\08\28@044057 by M. Adam Davis

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When I looked into it awhile ago (over a year now...) battery
manufacturers wouldn't sell them 'bare'.  You could buy them with built
in protection circuits (in a pack, even if it was a single cell) from
some resellers.

If you want a Li-Ion battery or cell, go get a cell phone battery.
There's a wide variety, and they are probably less expensive and less
hassle to get than a single cell from other sources.

-Adam

Morgan Olsson wrote:

{Quote hidden}

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2002\08\28@072526 by cdb

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Farnell list the button style ones.
Catalogue  Volume1 page 23
codes 303-1986/1962/1974/2000/2012/1998
Price 1offs A$9.19
This is from their 2001 February Catalogue(Australian Edition)
I haven't checked their website for the upto date info as I find the
site slow and unwieldly.

Colin
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cdb, .....bodgy1KILLspamspam.....optusnet.com.au on 28/08/2002

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2002\08\28@083944 by M. Adam Davis

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Lithium batteries are not the same as lithium-ion rechargeable batteries...

-Adam

cdb wrote:

{Quote hidden}

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2002\08\28@085230 by cdb

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Yes sorry, those ones I quoted are re-chargeable Lithium-Manganese.

Colin
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cdb, RemoveMEbodgy1TakeThisOuTspamoptusnet.com.au on 28/08/2002

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2002\08\28@115620 by Morgan Olsson

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cdb wrote
>Yes sorry, those ones I quoted are re-chargeable Lithium-Manganese.

Thanks
I guess they too have higer energy/grams than NiMH.

Well, maybe i should change thechnology for the available, then...
But theese in farnell are too tiny, 65mAh.  (and multiple = too expensive)
Farnell recommends 0,2mA charge -that will take too long. I´ll look other places for Lithium-Manganese.

BTW, whatever happened to rechargeable Lithium Vanadium?
I remember designign a product with them.

This is not one-off, it is for small production 100/yr+ hopefully.

/Morgan

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2002\08\28@162854 by Peter L. Peres

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On Wed, 28 Aug 2002, Morgan Olsson wrote:

>Hi
>
>Anybody knows where to get Lithium (rechargeable) (Li-ion) cells?
>
>There is a large variety of charger chips available, and some IC
>manufacturers offer samples of them, (and of course we could also do the
>algorithem with the PIC...) but to get hold of the cells seem very hard.
>
>I need it for a small light-weight solution, one cell and a few hundred
>mAh.

http://www.73.com

surplus LiIon 3600mAh cells and many other things.

Peter

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2002\08\28@165506 by Harold M Hallikainen

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       It appears that because of safety considerations, these are not
available without going through a specialized distributor that packages
them with safety circuitry. I'm working on a project that might use a
Panasonic 1.8AH cell. Someone else on the project has talked with AVT at
303 409 3712 about getting the batteries. I believe they can supply them.

Harold

On Wed, 28 Aug 2002 08:52:43 +0100 Morgan Olsson <morgans.rtEraseMEspam.....TELIA.COM>
writes:
{Quote hidden}

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Advertise at http://www.hallikainen.com/FccRules/ .


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2002\08\28@181042 by Sam Littlewood

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The indoor model flying scene is starting to used these - one supplier I
have seen:

http://www.smallrc.com/dwehtml/iemicro.cfm

> Anybody knows where to get Lithium (rechargeable) (Li-ion) cells?

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2002\08\28@182323 by Dave King

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At 10:59 PM 28/08/02 +0100, you wrote:
>The indoor model flying scene is starting to used these - one supplier I
>have seen:
>
>http://www.smallrc.com/dwehtml/iemicro.cfm
>
> > Anybody knows where to get Lithium (rechargeable) (Li-ion) cells?

Should have replied to the first one but I was snoozin.
I think one of the local battery chains, stocks the cells for rebuilding
laptop battery packs. They are called "National Battery"

Have you tried any of those guys for your cell's? I know a lot of those
places won't touch them over some unfounded fear of explosions and
resulting death but there are the odd ones who do ;-]

Dave

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2002\08\28@221723 by Archmage

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I know Digikey has them in there canadian catalog
i think the us allso has them
http://www.digikey.ca
sorry if some one has allready posted this

{Original Message removed}

2002\08\30@070032 by Morgan Olsson

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Thank you for your replies.

I have found rechargeable Litium at ELFA and Farnell but too small and too slow charging.

Li-ion and Li-polymer is best suited, but very hard to get.

Best so far is http://www.smallrc.com/dwehtml/iemicro.cfm that Sam Littlewood posted, which sell Lithium-polymer cells.  Cost is too high though, and i´d like higher capacity, i´ll ask them.

/Morgan
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2002\08\30@070051 by Morgan Olsson

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Thank you for your replies.

I have found rechargeable Litium at ELFA and Farnell but too small and too=
slow charging.

Li-ion and Li-polymer is best suited, but very hard to get.

Best so far is http://www.smallrc.com/dwehtml/iemicro.cfm that Sam=
Littlewood posted, which sell Lithium-polymer cells.  Cost is too high=
though, and i=B4d like higher capacity, i=B4ll ask them.

/Morgan

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2002\08\30@123908 by M. Adam Davis

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The real problem is that there are two chemistries of lithium ion
batteries.  They have slightly different charging parameters, mainly
that one charges to a slightly higher voltage (a few hundred millivolts
diffference, IIRC).

If you don't know which chemistry you're working with you are likely to
either not get the recomended capacity or blow up the cell.  The bad
health effects of vaporized lithium are greater than the bad health
effects of harder to blow up NiMH or NiCd.

The industry is waiting for one to gain more market share than the
other.  Manufacturers have chosen different methods for different
reasons, but you need to research this question and others carefully
when you build your charger.

Lithium Ion Polymer is a completely (but related) different beast.

-Adam

Dave King wrote:

{Quote hidden}

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