Laptop batteries

[Brian Puccio]

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)
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