I just picked up my shiny new Iphone 4 yesterday. I charged it up and synced it, screwed around a bit then plugged it in over night. I used it lightly for an hour or so in the morning, when I checked my mail acouple hours later my battery life was down to about 85%. I just wanted to see if this is normal or if it seems like excessive battery use. I did adjust my screen brightness to 50% after this. The battery seems to be around 80% now (5pm) or so after just some light use today. Is there a test to see if my battery is running like it should? *It should be noted that I do have ocd when it comes to these kind of things.