Droid user here, my battery easily last all day, 13 hours later and it is still at 50-60 percent battery.
Best thing to do is long click one of the three screens and add the power widget. This alone will help you turn off wifi when not needed, turn the brightness to 50 percent, turn GPS off when not used, which will hog the power just as quick as the screen at full brightness, syncing which I keep on all day long, and bluetooth off when not driving.
I have found GPS is the main culprit of battery usage with screen set to full brightness as the second. You can always see what is eating the battery under Menu->Settings->About phone->Battery use
I do have a task killer program that I only run once every month or so, and I never turn my phone off setting at 1,130 hours uptime with no issues, Droid does!