you know, since installing the Desire ROM and checking things in the Battery Usage panel... it's a bit different than the stock Nexus battery usage panel in looks, but basically the same in operation... what's most odd is the display is by far no the most power intensive item on the list... even with heavy use... i can't see how it should be THAT different... but... it is...
this is just a normal day's usage... 7h 20m into it... about 33% left... did a lot of web browsing over lunch and included a 30min phone call... about 9%/hr... which is about right... with the stock Nexus ROM, the battery usage would ALWAYS report the display at the top of the list... making up like 40% of the total usage... now it's consistently at the bottom... i dunno what's up... but it does seem like the Desire ROM has different brightness settings... 100% with this ROM isn't nearly as blindingly bright as the stock ROM... just an observation... I could just be seeing things... all I know, this is now my usually battery usage percentages...
