A:Answer You might even be able to go past 32GB (see other answers to similar queries).
As to battery life, I'm always a little leary about manufacturers' quotes on this, as there are many variables, and no standard conditions provided on the variables while testing. I once was comparing two computers on Best Buy, both by the same company, and one quoted 1 hour, while the other answered 41 hours. Surely there was a bit of leeway on the testing in these instances.