I turned off assisted dialing but I still see the Dialer using a bunch of my battery. I'll noticed it towards the top right as I take it off the charger in the morning so its not like I've made any phone calls.
Hey I was having the same issue...and to help with it I went into Titanium backup and wiped all the items that show up under "dialer" when you tap it under the battery usage screen. Items like "Phone, Dialer Storage, DM Command Service, and Field test". I wiped all of those and that seemed to help.
However I noticed the biggest difference in battery life after I installed nerozehl's 2.3.6 dream kernel today. I chose battery saver option using the speadtweak.sh. Ever since I have had great battery life.
And I don't know if you have tried this. But whenever you restart your phone, right after it boots up, go into running services under applications. I always see so many running services going on that I don't need at the moment. Google music and skype come to mind. End them. I always found them to use quite a bit of juice when the phone was just in my pocket.
Hope this helps...best of luck