I ordered a Sony NEX 5N from a website. it arrived a week ago with a totally dead battery and no external battery charger. For some reason they seemed to think this camera was charged through the USB port so they sent me a USB charger instead of the external mains charger. I'm still waiting for the company to send me a new external battery Charger but how worried should I be about the totally dead battery as well (Battery is a Sony Original Battery)? Is it common for an NEX Battery to be so low the camera won't even turn on? I've not been able to turn this camera on even once.