I tried plugging my 620 in to charge to have it bring up the normal charging screen for about 10 seconds before it stops its charge. I did the normal routine for when something similar happens (i.e. cleaning out the areas where the connectors meet for the cord and watch, cleaned out the usb end and watch end, etc.), but this keeps happening. I've even done the manual shut off and full reset and doesn't seem to be an issue on the watch's end. Anyone have any similar issues?