My wife uses a MBP but hardly ever takes it on a trip. So I've never heard her complain about lack of battery time. I <
learned today> that
Mavericks has the capability to indicate apps that are using a lot of power. It's right there in the Battery Menu Bar drop down menu. Could be handy for those working away from their charger!
Especially if they weren't aware that one of their apps was wasting power!