To be honest, I never had a battery life problem on 4.1.2, one reason is I didn't use Google Apps (I had gapps package installed, but the minimal package), I also followed this thread:
If you like push notifications from Gmail and other Google dependent apps, ignore that thread. Otherwise, it will improve your battery life. The other reason was I never ran cm10. I ran @thomas.raines ParanoidAndroid 4.1.2. Imo, the best cm10 based rom the Blaze had. But that's MY opinion. He's taken down the link, maybe you can try and chase him down and see if he'll re-upload it for you...
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