I have a fairly lengthy road trip comming up, and would like to take my laptop with me to entertain me for at least half the trip.
usual battery life I can get out of my macbook with wifi/bluetooth off and dim screen is about 3 hours.
my question is: will using a usb flash drive with movies on it save me more battery, than having to run it off the laptops hard drive? or does the usb port pull significant power either way.