I am using a HTC Sensation with Revolutionay HD ROM flashed. after a full charge O only get 12-13 hours use out of my device

screenshot by macman120, on Flickr
As you can see I am not an excessive user, I mainly use it for texting, twitter and Facebook. I make one or two calls a day and use the music player for about an hour max.
Any help would be appreciated

screenshot by macman120, on Flickr
As you can see I am not an excessive user, I mainly use it for texting, twitter and Facebook. I make one or two calls a day and use the music player for about an hour max.
Any help would be appreciated