Hi, I'm a newbie in the Mac world. I got a problem with my new macbook. I noticed that the percentage of my battery keeps dropping even when I use the plug all the time. It drops from 100 to 95 in like 5 to 10 days and then begins to charge. I searched in Google and someone said it was normal for macbook battery. But I don't think that the battery being charged every week is a "normal" thing. I also searched in this forum but unfortunately got nothing. Would you guys please give me some idea about why does it happen and what can I do about it? Thanks a lot!