any body else have a problem charging the battery in the st10? First time I used the receiver, everything worked fine. After depleting the battery to about 50 percent, I plugged in the charger and left it overnight. After that, nothing would work.. I checked the battery, and had less charge than when I plugged it in.. I called Yuneec and they said it was the battery, and they even sent me a new one for free. The new battery does the same thing. I charged both batteries out of the receiver, and both worked perfectly. Anybody got a clue?