[kborer22]

i don't know for sure, but if you were to drain you battery ALL the way down to 0% then there is a possibility that you could damage your battery. There is a very good possibility that HTC has put a safety in place, making it so you can never actually get you battery to the point where you would damage it.

Just use your battery as you normally would. For the sake of battery left i would suggest running it until android suggest you charge you phone (14% i believe) that way you will get the most accurate picture of how much battery you have left. That's what i did and it seems to be pretty much right on. I'm also trying out juice defender right now, it claims to be able to extend battery by at least 10% so i'm going to see what happens.