Laptop batteries

Charles Yao ccyao at
Mon Jan 9 01:10:50 UTC 2006

On 1/9/06, Brian Puccio <brian at> wrote:
> On Sun, 2006-01-08 at 10:41 -0800, Tom Marshall wrote:
> > > My aunts new Compaq says to remove the battery if your not going to
> ever
> > > unplug it. My new ThinkPad says to allow the battery to run down to
> 10%
> > > or less before recharging, because it will ruin the battery. It also
> > > says if the battery doesnt ever run down, it wont recharge after some
> time.
> >
> > I don't know about recharging, but the battery will fail to hold a
> charge if
> > left plugged in for a long time.  A couple years ago, I had a laptop
> (with a
> > Li-Ion battery of course) and left it plugged in for about a year
> straight.
> > After that, the battery went directly from 96% to 3% charge -- it only
> > lasted for 15 minutes or so.
> I've had my current laptop since September of 2004 and it is plugged in
> all day while I'm at work, the afternoon while I'm at home using and at
> night while I sleep. About 10 hours a week it gets used while not
> plugged in. So far, the battery performance is the same as when I bought
> it. I've made a wear spot in the keyboard though.
> (IBM ThinkPad R51 1836BDU, bluetooth CDC, faster harddrive and 1GB of
> RAM added to the base config myself)
> Version: GnuPG v1.4.1 (GNU/Linux)
> iD8DBQBDwbas/FtTOrvSQB8RAhmHAKCtV5EHPmi+AO0wAKwCUhbORzsd8wCfdKZ7
> agLX/cT5XeD9ULbv4OmUJ64=
> =Z9Jg
> --
> ubuntu-users mailing list
> ubuntu-users at
Same here. I dont know how to take the battery our of my dell inspron, so I
leave it in while plugged. I keep it on for most of the day plugged in for
over a year now, and i dont notice any difference.


"It is unwise to pay to much, but it is worse to pay too little; you
sometimes lose everything becuase the thing you bought was incapable of
doing the thing it was bought to do"
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