Re: [iPAQ] 5450 battery dead, can it be charged outside the iPaq?

Hi,
see: http://www.handhelds.org/projects/h5400.html

Am Mittwoch, 16. März 2005 17:31 schrieb Rutger van Bergen:
> Paulo,
>
> Thanks for this information. There just is a tiny problem, which
> consists of the fact that the battery for the iPaq 5xxx has 5 unmarked
> contacts, so I don't know what contacts to connect the + or -
> terminals to. I can also imagine that all five contacts actually have
> a purpose, so it might be that a "home-made" charging unit has to be a
> bit more complex than two terminals.
> And I don't really want to find out by trial and error, as that might
> indeed be damaging to my love life (due to the horrible mood I will
> get into by molesting my battery.)
>
> If you or anyone else has any details regarding what I should connect
> to a 5xxx battery for an emergency charge, I would gladly hear about
> it.
>
> Regards,
>
> Rutger
>
> On Wed, 16 Mar 2005 14:22:49 +0000, Paulo Marques <pmarques_at_grupopie.com>
wrote:
> > Rutger van Bergen wrote:
> > > Siggi,
> > >
> > > Thanks, I will try that, too.
> > >
> > > However, as the procedure you describe takes 4 days, for efficiency
> > > reasons I would still like to know if there are other ways to deal
> > > with this situation (like charging the battery outside the handheld).
> > > I wouldn't even mind having to spend some money on it and/or get my
> > > soldering iron involved. I just need to know what to get/assemble.
> >
> > Since you've mentioned your soldering iron, using a standard 12V, 1000mA
> > AC adapter with a 20 Ohm 5W resistor in series for about 15 minutes
> > should give it enough charge to make the iPaq respond. Just make sure
> > you connect the (-) terminal of the battery to the (-) terminal of the
> > AC adapter and each end of the resistor to each (+) terminal. The
> > resistor will get hot (that is expected), but the battery should remain
> > cool.
> >
> > AFAICT the battery should not be damaged by this procedure. However, I
> > take no responsibility if this damages your battery, your dog, your love
> > life, etc. :)
> >
> > I use this kind of "emergency charge" all the time with my celular phone
> > and never had any problems. The phone is over 2 years old now, it
> > still uses the original battery, and the battery still lasts for almost
> > a week.
> >
> > Anyway, I've only recovered an Ipaq like this when I had a 3970. For the
> > 3970, pressing the reset button *while* it was connected to the power
> > supply, usually did the trick.
> >
> > --
> > Paulo Marques
> > Software Development Department - Grupo PIE, S.A.
> > Phone: +351 252 290600, Fax: +351 252 290601
> > Web: www.grupopie.com
> >
> > All that is necessary for the triumph of evil is that good men do
> > nothing. Edmund Burke (1729 - 1797)
>
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-- 
Best Regards/Gruss Siggi