maybe "all day" on mbp was an embellishment. but i'm reading things like 3 hours of web browsing time on the latest thinkpad displays! i've also seen comments in here it's not that bad. maybe a batch of bad batteries? i really would love to try one and get away from the mac ecosystem (mainly because of dongles, although one must ask, is an AC brick better? and why can't anyone else make a brick like apple, with tidy cables!)