On 4/5/08, Apptech <apptech@paradise.net.nz> wrote:
> > If you know that a Li-Ion needs a constant current
> > charging followed
> > by a voltage constant charging algorithm, then you know
> > how you can
> > build a charger below $1.
>
> A real world Li-Ion charger should do slightly more than
> that, but may not. If battery voltage is below a certain
> limit it can be dangerous to apply full rated current and
> they should be trickle charged until they come to safe
> range.

Yes, but you may charge  with safe current (in the safe range area)
from the very beginning. I didn't say it must be fully charged in 10
minutes...


 Under some conditions the cells can have metallic
> fingers plated across them and applying full current can
> cause fire. In the case of a plated short in a multicell
> pack the cell protection may blow an internal series fuse.
>
>
>
>
>            Russell
>
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