BlackBerry 8830

So I got this phone almost a week ago. Truth be told I am trying it out and comparing to the Mogul. Initial impressions were a landslide victory for the 8830, but then a few days later, I got the BES hooked up. Now my battery is gone by 5:00. Even my Q lasted longer than that. Any tips for a newbie to the crackberry on why my batt is so atrocious? I played with it constantly for 2 days straight and still had 25% until I added the BES. I have my other email accounts set to reconcile hourly.