Please, only one knowlegable person respond, then this thread can be deleted/ wastelanded. I searched, couldnt find consistent answers. I got my 3Gs replaced last night due to a broken dock in my iPhone. I've been letting it sit on its initial out of box charge all night and it is now at 13%. Should I let it die COMPLETELY or should I charge it to 100% now? Is there a good percentage to start charging it at? 10%? 0%? Now? Thanks in advance!