I recently got a Samsung Galaxy S III, and I love everything about it...except the battery life. That stinks. I charge my phone nightly, and when I take it off my charger in the morning, within a couple of hours of light use, the charge is down by at least 20%! Maybe I just have a bum battery, but I'm not sure. So I was thinking about getting an extended battery...but I have a question: I have an Otterbox Defender case on my phone right now. Will I still be able to use it if I get an extended battery?