My first time daily driving the Moto X was after getting it in NYC and flying home I left the hotel with it fully charged, spent 4 hours in a plane with it in airplane mode, and Moto X still died in the baggage claim before I could make it home. The second time I daily drove the Moto X, I also managed to kill it doing nothing out of the ordinary before I got back home. I honestly cant remember the last time I drained a phone completely actually using it. Since those couple of times I havent had problems making it through a full day when Ive daily driven the Moto X, but thats with my usual opportunistic charging from every available wall socket and USB port, and my mixed use definitely isnt 24 hours, rather closer to 8.