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:

> 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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