Hi fellas, Got a question for you guys. Due to my schedule, at times I begin charging my iPhone (1st gen) around the 10%-20% mark. Now this is done maybe once or twice a week. Is this damaging to the battery in any way? I'm asking because some say that a lithium ion battery shouldn't be kept around its lower end of a charge. So instead of having it drop between 10%-20%, have it at a steady middle range, you know? So basically, should I worry if I find myself charging between the 10%-20% range?