Battery life is very good, especially if you turn off the wireless when you are just reading. Our book has been on week long trips and never needed a recharge. My wife probably spends anywhere from 1-3 hours per night reading, and it needs a charge maybe once a week at most.

It's thin... maybe a 1/4" thick. In the case that we bought (belkin) it comes out to be about 3/4" thick. Overall, much easier to carry around than a real book!

Paul