Coming from a self-confessed computer geek, this is the sort of question I'm a bit embarrassed to ask, because I feel like I should know the answer.
ANYWAY...
Someone I know is convinced that a higher capacity M2 card (say for example a SanDisk 4GB card) drains far, far more battery life on a Sony Ericsson phone than a standard Sony 512MB M2 card. True? False? True to a certain extent but not something worth worrying about?