Re: [Thinkpad] Battery Refill

On Tuesday 02 March 2004 12:01 pm, you wrote:
> On Tue, Mar 02, 2004 at 01:41:14PM -0500, STeve Andre' wrote:
> > On Tuesday 02 March 2004 09:40 am, you wrote:
> > > On Tue, Mar 02, 2004 at 11:20:40AM -0500, STeve Andre' wrote:
> > > > On Tuesday 02 March 2004 07:24 am, you wrote:
> > > > > On Fri, Feb 27, 2004 at 06:03:13PM -0500, STeve Andre' wrote:
> > > > > > On Saturday 28 February 2004 10:55 am, Kyung Ho Park wrote:
> > >
> > > I just think we should separate what we know (the battery cycle count
> > > can be queried) and what is simply conjecture.
> >
> > If the counter cycle can be queried from two Windows machines and
> > they get the same information, then how can the battery not have that
> > information? This seems fairly straightforward to me. If there is a
> > flaw in this, please enlighten me.
>
> What I'm refering to by 'conjecture' is the idea that there is a circuit
> that will refuse to charge the battery once it reaches a certian number of
> cycles.
>
> > IBM has stated 300 cycles for some battery I've dealt with. It was
> > quite a while ago that I got that, on the phone. It might have been
> > an A series machine.
>
> 300 Cycles for what though? Lion cells? MTBF for the charging circuit or
> did the specificially mention that there is a circuit that will refuse to
> charge after 300 cycles. If they didn't then it is also conjecture that
> the value mentioned is related to the circuit (as it can just as easily be
> the cells themselves which generally don't survive much more than 300
> cycles).

300 cycles of "charging" the battery. It is my recollection that going
down to 80% or below was considered a charge. I'm quite certain
there is a circuit there. I'm going to try to ask my friend about this
tonight, if I can find his number.

--STeve Andre'
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Received on Tue Mar 2 16:49:31 2004