I have had my kroma for maybe a month and a half now and I've noticed it doing some strange things when charging. Sometimes the display will stay on and the wattage numbers start cycling where it goes to max and then starts over. Also when I just unplugged it now, the display was flashing the numbers and when I unplugged it, it only showed about 80% charge even though it had been charging since this morning. Did I get a faulty unit?