When I plug my mini USB charge cable to the headphone I can not hear anything. I plugged the usb drive in my laptop. I plugged one end of the cord into my laptop that charges the headphone and I plugged the other end of the cord into the laptop. I would see a grreen light turned on the headphone. I would also see a red on the other side of my headphone. I even charged the headphone all night. I have had this headphone for year and a half.