I've been using my MBP for about a year now, and I usually use it with the adapter plugged in. Recently though, I started using the battery more, and I noticed that the battery started dying with one hour of life left, almost exactly. I checked the little LED deal thing on the battery itself, and it gave only the one blinking light (indicating zero charge, I think). Lately it's been getting worse and dying after 20 or so minutes of use. Is there anything I can do, or should I call in my warranty? Unfortunately I have a Best Buy warranty (I know, I know), so I thought I'd post here before I go to them. Thanks a bunch!