The display of time left on battery left seems horribly inaccurate. It currently says 50% althought the battery icon at the top of the screen is closer to 80 or 85%. Also in the information it states Full Battery Life: 9:59. I go a lot longer than that usually. I've tried recalibrating and it's the same. How is it calculating battery life? I wish my battery did last longer, but I use it pretty heavily. But it lasts longer than 10 hours. is there a better app out there?