Apple says not to leave battery plugged in, anyone do this?

According to Apples website battery recommendations, they say

"Apple does not recommend leaving your portable plugged in all the time"

I use my notebook mainly at home. I usually kept my old Compaq notebook plugged in all the time (I still do). Apple doesnt recommend what you should do, only what you shouldnt.

Should you run the battery down before charging each time? Is the battery covered under AppleCare ?

http://www.apple.com/batteries/notebooks.html

yea, I make it a pratice to drain the battery once a week down to 2% or so. I read an article where it said that it improves the battery life.

whattt i have had my MBP plugged in all the time and drain the battery once a month to calibrate... I have never had trouble with it or when i was using a powerbook.

I've seen these recommendations elsewhere, but I don't know that it's really anything to worry about.

At work, we have about 100 notebooks. Most of them are left plugged in the majority of the time. I've seen batteries remain usable after 5 years+ when used in this fashion. They're all Lithium-Ion batteries, no different than what Apple uses in its notebooks. So, in theory, it might not be a bad idea to regularly purge your battery, but I can tell you in reality that it's not going to put excessive wear on it if you don't.

if you remove your battery while ACed, your clock speed (according at least to CoreduoTemp) almost cuts in half.

anyone else see this yet?

What do you mean "ACed?"

ALSO when your mbp is unplugged and on can you take the battery out and change in a new one? Or will it turn off the computer? For some reason I remember my friend taking the battery out of his powerbook g4 when it wasnt plugged in and he said the notebook will stay on for about 5 mins. or so.

Is this true? Is it bad to do this? I'd imagine it's only to change the battery without turning it off if you're on the go.

I believe what kgier82 meant by "ACed" is plugged in.

Batteries do need to drain and charge..... a fully charged battery for 2 years will not charge up the same as one that gets drained once a week etc

By recalibrating my battery every now and again once I'd learned it was a good thing to do, I've got my battery health up from 89% to 94% according to iStat Pro...I usually use my laptop plugged in at my desk, all I do is make sure I run the battery down until it's flat when I take it into the lounge occasionally.

when your mbp is unplugged and on can you take the battery out and change in a new one? Or will it turn off the computer? For some reason I remember my friend taking the battery out of his powerbook g4 when it wasnt plugged in and he said the notebook will stay on for about 5 mins. or so.

Is this true? Is it bad to do this? I'd imagine it's only to change the battery without turning it off if you're on the go.