Just got my P2V+ today. Charged up the batteries, removed gimbal stop, installed props. Installed a battery, pushed button for 2 seconds until it starts to flash, all green lights are on solid. Button flashes red for about 7 seconds, then battery shuts itself off. It does this with both batteries. I am getting no response from the Phantom whatsoever. I have tried this with receiver on and off, it doesn't matter. This is frustrating. Am I missing something ?