I'm using a nightly Hercules build of CM9, I'm not sure which one to choose.
I think I should use this one
and use the circle battery mod with the ASOP lockscreen.
For CM9, give this a try. It is built off the 07/19 CM9 Nightly for the Skyrocket. It should still work for the Hercules though. Do a nandroid first though just to be sure. And this DOES NOT include a battery mod.
PM me if you have any problems and I will see what I can do to help.