I agree with others that this rom seems to take a lot of juice.
From my experience, the battery is barely sufficient to last an entire day with the new CM7RC4. I did the battery stats wipe and haven't noticed a change. Today I did not use wifi nor make any phone calls and hardly turned on the screen and it was at 5% before the end of the day.
Tonight I enabled the system monitor for a couple hours while it sat unattended. It showed that the CPU was at a solid 50% the entire time. Once I started reviewing the log, the CPU jumped above and below 50%.
Not sure if this helps. Thanks for your hard work Racht!