Have you just flashed cm10.1? Are you on the latest STABLE/RC? I'd do a clean install, making sure you wipe wipe wipe. Also, make sure to let the ROM settle a few FULL charge cycles (fully discharging and charging) to calibrate the battery.
Display brightness & GPS setting all play a vital role when eating your battery. I'd lower the brightness and turn off all GPS setting when not in use. (As well as WiFi)
Also, if you text a lot, I'd turn off the key tap vibration and sound on your keyboard if you have it on. I know also,
I'm on CM10.1.3 and am getting great battery life with the STOCK kernel.
If your not using 4GLTE turning that off as well can increase battery life.