Does exchange push email use more or less battery?

[brownhornet]

All I know is when I was using Seven push mail it drained the hell out of my battery. I would take my phone off the charger and by like... 1 or 2 PM I had to charge the phone again. Once I got rid of it my battery would easily last up until 9 or 10 pm and still have 30 or so % left. Now i'm not sure about the google push mail but I just got rid of it and use the regular email and set it to check once an hour.