From: Alden S Klovdahl (Alden.Klovdahl_at_anu.edu.au)
Date: Wed Jul 19 2000 - 17:59:23 EDT
good points.
personally, i have never had need of power failures to give me my share
of lock-ups with any thinkpad i've had. : - )
regards, al
Alden S Klovdahl / alden.klovdahl_at_anu.edu.au / fax: +61 2 62 49 05 25
Sociology Arts / Australian National University / Canberra ACT Australia 0200
On Wed, 19 Jul 2000, Brian Bender wrote:
> A question to you guys who like to leave the batteries out:
>
> Do you then plug the AC adapter into a proper UPS?
> If not, why the heck are you defeating one of the great unsung features
> of a notebook PC (the built-in UPS)? Is the work you're doing that
> unimportant? <humor>Or are you just used to your OS locking up all the
> time and hoping the disk is clean or repairable when it reboots
> anyway?</humor>
>
> (KIDDING! I was KIDDING!!!! I'm just poking fun at the flame-war
> threads with that last comment! If anyone was offended: grow a sense of
> humor already...)
>
> Seriously, though, _I_ wouldn't spend any significant time on _any_
> machine without a UPS.
>
>
> - Brian Bender
> Pittsburgh, PA, USA
> TP600: 10GB HDD, 224MB RAM, WinNT5 / Slack7 Linux dual-booting
> nicely.
> One battery or the other _always_ installed.
>
>
> -----Original Message-----
> From: Alden S Klovdahl [mailto:Alden.Klovdahl_at_anu.edu.au]
> Sent: Wednesday, July 19, 2000 5:32 AM
> To: Randal Whittle
> Cc: TP List
> Subject: Re: Tech Support Problems -'defective battery' - T20
>
>
> the T20 manual reads as follows:
>
> "Extending the life of your computer's battery
> ....
> The following tips can help you to extend the life of your battery:
>
> . Do not recharge the battery pack until all of its power is used.
> Recharging a battery pack that is not completely discharged can
> shorten battery life.
>
> . Once you start charging the battery pack, do not use it until it
> is fully charged.
>
> ...."
>
> so, if you keep your battery in, because of the absence of a battery
> compartment cover, you invariably reduce the life of your battery.
>
> if you take your battery out to extend its life, because of the absence
> of a battery cover you risk damage to T20's 'underbelly'?
>
> that doesn't strike me as an ideal choice.
>
> looking at a T20 battery, it seems it would be fairly straighforward
> either to take the cover (before its 'glued' to the battery itself)
> and provide that as a battery compartment cover, or alternatively,
> glue this cover to a plastic 'waffle/eggcrate' piece (for greater
> strength) and provide this as a battery compartment cover.
>
> unbundle it and sell it, fine, but make it available for anyone
> who wants it.
>
> regards, al
>
> > > > my unit. I have only had my 1420i for less than 2 months, and the
> > > > battery only holds a one hour charge. Plus, it looses all of its
> charge
> > > > within a week of no use. The man said, "This is normal with the
> type of
> > > > battery that came with your unit". (Ni-Mh)
> >
> >
> > >if so, and if such a cover is not purchasable, this would mean a
> choice of
> > >running the machine on AC without the battery with a big hole in the
> bottom,
> > >or running it on AC with the battery in all the time. if the latter
> would
> > >not this tend to shorten the battery life considerably? ... the
> drops in
> > >charge that would invariably occur if one forgot to plug in to AC
> before
> > >turning the machine on, then did so later, followed by the re-charge
> from
> > >partially empty to full.
> >
> > It was indeed a problem on the earlier TP's (I really burned
> up a
> > battery on the TP 750C by leaving it plugged in all the time. It
> would
> > drain slowly to something under 100%, then charge back up, drain
> slowly
> > again...etc.)
> >
> > The good news is (a) Li-Ion batteries don't discharge
> themselves
> > as readily as NiMH batts do, (b) The "Memory Effect" is significantly
> > diminished over NiMH batts, and (c) the charging circuitry is smarter
> now
> > than it was earlier.
> >
> > In a nutshell, I haven't had any "kill the battery" problems
> > since...oh, barring a few odd issues with the 701, since that 750.
> That
> > means my 560, 600, and now 1-month old T20, didn't seem to have that
> problem.
> >
> Alden S Klovdahl / alden.klovdahl_at_anu.edu.au / fax: +61 2 62 49 05
> 25
> Sociology Arts / Australian National University / Canberra ACT
> Australia 0200
>
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