I've been having a problem with my macbook, although I'm not sure if it's the battery, or the laptop itself. I'd been starting to get low battery performance, 2-3 hours on a full charge, a little more if I turn the brightness down pretty much all the way. I recently went out and brought a brand new battery, fully charged it, and I'm still only getting around 3 hours of battery life on a full charge. I'm wondering if I should just take the laptop to a Mac store and have them look at it, or is there something else I can do to fix the "problem".