Hi, after a crash my battery wont charge anymore. I had a crash and the battery popped out. After I changed the props and recalibrate the compass I was able to fly again. So the battery is still working and I can fly with it, also the led lights work after pushing the button. So when I want to charge it, the leds wont go on and even afther one hour there is still only one led when I check the battery status(one push on button). I charged my other battery without any problem, so the charger is working fine... Does anyone know what the problem might be?