Many have complained about getting terrible battery life on 2nd-init ROMs. After trying a few (CM7 nightlies, OMFGB, MIUI, Liquid), I almost wrote off the ROMs with the poor battery life not being worth the customizing you could do with themes. However, the thread below has provided exceptional battery life:
MIUI Battery Saving/Performance Boost-Updated 8.20.11
I know many of you don't ever visit rootzwiki, and I don't believe that thread has been posted before, so hopefully it helps many of you like it has me.
MIUI Battery Saving/Performance Boost-Updated 8.20.11

I know many of you don't ever visit rootzwiki, and I don't believe that thread has been posted before, so hopefully it helps many of you like it has me.