My sprocket turned on a few hours ago but i turned it off because it would not connect, and when i tried to turn it back on, it would not. I thought the battery was just dead so i put it on the charger, but when i did no lights were displayed and it did not turn on. I left it on the charger for 2 hours just to come back to a warm device and still no power. I have tried everything and it will just not turn on. the charger works fine, as well as the outlet it was plugged into. not sure whats wrong.