Hi, I'm wondering, what is better for prolonging your macbook pro's battery life, is it 1. drain the battery, recharge it fully, plug out the source, drain it, and recharge it again or 2. keep charging it whenever you have a power source and never drain it? I've always been doing #2 because I use the laptop a lot and home and it would just be a hassle to keep switching the power source on and off. But then I heard that it's bad if you overcharge your battery, so once in awhile I try to do #1. Last night, though, my friend told me it's bad for your battery if you drain it all the time. So which is, in fact, good or bad for your mbp? Thanks in advance!