Battery Life Issues (I think)

[Kingbob]

Surfing online with your phone actually costs a lot of charge，especially the wifi，so try to use wifi less than the usual，it will help.

[mick-e M]

So I am loving my new lumia 800. I'm not sure if this is a real problem, but my battery life seems to be rather short. I can go through a whole school day, then to pretty late into the evening without having to charge it, but the battery indicator seems to go down really quickly. I only have weather running in the background, and my phone is updated to the latest software, according to zune. My brightness is on low, and I have locations turned off. I use wifi a lot, so I will try to turn that off and see if that helps. Anything anyone can think of that I'm missing?