Hi All - I am a brand new user with my first drone, so I am trying to figure my way around. I have a phantom 4 advanced, and I seem to be having some problems getting the drone battery charged. When I hit the button on the battery on the battery, it turns green and the bar farthest away from the button flashes. When I put it on to charge, the same bar flashes a few times and then goes off. I left it on the charger for a few hours and it didn't seem to charge as the bars stay the same. I thought that maybe it was charged and I am reading it wrong, but when I try to power up the drive with it in, nothing happens (it doesn't start). Am I missing something easy, or am I doing something wrong?