Ok, android noob here. I have been hearing about the thunderbolt having battery issues despite having a more efficient second-gen snapdragon. I was curious if there were any batteries on the market that would provide a few milliamps more. The other thing I am curious about is if they would properly fit inside the phone case without a bulge. I think that a slightly larger battery is more acceptable than having to switch batteries halfway through the day. I heard about the 2700 milliamp battery but am afraid that it will turn the thunderbolt from a sleek sexy phone, to a camel. Thanks!