This is our 2nd year getting the MLB.TV/MLB At Bat app. Love it! Last you I paid for both MLB.TV and the MLB package through DirecTV. This year I'm ditching DirecTV and just going with MLB.TV. As others have said, you watch it on your TV with PS3 or with Apple TV, as I'm doing.
This topic is weird. I just got my iPhone 5 about a week and a half ago. I haven't charged it in 2 days and it has 52% battery life left.
I'd take it back Tank. Have them fix or replace it.