Got a new iPad air on Friday to replace a first generation iPad. And I'm finding the battery life on this one to be worse than my original iPad...and my partners new iPad. Started at 93% this morning and already down to 32%. No videos. Light surfing (2-3 hours) and reading on the subway (90 minutes). An hour playing plants vs zombies 2 (now that I can). Yesterday was the same thing. Battery is not lasting. Is anybody else having problems?