I'd think that they will actually recharge to somewhat less than 100%. But Apple still recommends unplugging the computer from time to time, so I'm assuming they get to very near full capacity.
My laptop is plugged in to a Thunderbolt Display almost all the time, so the battery gets topped off. It says that it is "charged", but I have no idea how much absolute capacity is that.
If I'm not going to unplug the notebook anytime soon (not travelling, not weekend), then I should be able to tell to leave it half charged (half, since discharging completely is even worse).
I don't know what brand of computer outerworld uses, but my MacBook doesn't start charging until below 95%. When plugged in for long durations, the battery is not running not.
I thought modern batteries had mechanisms in place to prevent that?