Hey i have the Axe cp heli. When my lipo gets done charging i plug it in the heli, i let the gyro intialize and the green light stays steady and go out to fly it. But when i power up it sounds like it has enough power and will start to lift off and then its like the battery is dead. Why would it be doing this? I let the battery fully charge and the green light comes on the charger. Somebody please help me. Thank you