I really don't want you to miss "House of Cards" so I am going to be very generous and give you a couple more tips. Only because I'm generous(you're welcome).
Use Auto- Brightness: The brightness of the screen can be huge battery assassin. You can use the auto-brightness feature to allow the iPad to adjust its brightness based on the ambient lighting within a room. Auto-Lock Sooner: Adjust the Auto-lock feature, which allows the iPad to lock when it hasn’t been touched for an extended period of time, this will conserve battery life.