i just got a new cell phone: LG enV touch. now i wanna do this right. What must I do in order to make sure the battery lasts a long time? I've heard all sorts of things and I'm not sure what/who's right. phone uses a lithium battery. i was told to charge it normally (charge when low, if in rush, ok to under charge) and completely charge it and completely discharge it once a month to "calibrate" the battery. I've also been told that charging and completely and discharging it completely decreases battery life span. and that Over charging is bad...correct? what exactly should i do? what exactly should i not do?