Re: battery life
hi!
i found an article on a german mac site about one week ago.
there was a report about apple users, who had problems with ibook batteries and
had them replaced by apple. there was also a link to apple's discussion site
http://docs.info.apple.com/article.html?artnum=14449
i read it very quickly, but it might be useful!
it describes how to reset the pmu
bye,
clemens
On Thu, Mar 20, 2003 at 08:46:25PM +0100, Mich Lanners wrote:
> On 20 Mar, this message from Michel Dänzer echoed through cyberspace:
> > On Don, 2003-03-20 at 11:42, Edward G. Speyer wrote:
>
> >> Note how my max_charge has dropped from 3404 to 2874. Should I be
> >> alarmed or is this just the PMU giving me dodgy statistics? (It does
> >> seem odd how max_charge only drops when the battery is emptied.)
> >
> > I do think deep discharge is the worst enemy of these batteries,
> > unfortunately. I usually do at least one deep discharge a day, and the
> > battery in the old TiBook lost about half an hour of capacity in less
> > than a year. Compare that to the good old Pismo, the battery of which
> > was like new after almost two years of daily deep discharges...
>
> Yeah, I'm seeing the same on my TiBook I. I am down to 1889 of
> max_charge. Not a good sign....
>
> I am wondering whether this sin't (at least to some extent...) the
> intelligent battery's fault: I do find that sometimes the last 10-20
> percent of charge are used up rather fast. My fear is that the battery
> controller will declare 'end of discharge' reached when there is still
> some capacity left, resetting the max_charge to a lower value.
>
> Anybody have instructions for resetting the battery's controller (like
> there used to be available for some early Powerbooks, maybe 500 sereis)?
> Or failing that, instructions for replacing just the accumulator
> elements instead of bying a new battery pack?
>
> Cheers
>
> Michel
>
> -------------------------------------------------------------------------
> Michel Lanners | " Read Philosophy. Study Art.
> 23, Rue Paul Henkes | Ask Questions. Make Mistakes.
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> email mlan@cpu.lu |
> http://www.cpu.lu/~mlan | Learn Always. "
>
>
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