I have a 15" 1.5Ghz G4 PB that I keep on my desk. Before, I was told that to keep the battery going, since I always have the PB plugged in, I should run the battery to empty about once a month and then recharge it. I am about to buy an iPod mini and I just read that its bad to completely deplete the iPod AND PB's battery. The difference between the iPod and PB is, my PB stays plugged in and the iPod mini's battery would constantly be in use. So am I still doing the right thing with the PB battery?