I installed Simply Stunning a few days ago, and I've noticed my battery life has been atrocious. I blame it partly on the battery (have a replacement on the way), but this is just ridiculous. A hour or two after taking it off the charger and not using it at all, the phone was at 20% when I checked it. I didn't turn it on once the entire time. I think something is seriously wrong, I used to at least get 4 hours with any other ROM. Nothing out of the ordinary is sucking up power like apps. I would like to get the issue rectified before my new battery comes in later this week.
I reset the battery stats after fully charging it, and I'm going to let it drain to completely to recalibrate.