I've been looking at some threads so not to double up with my question and couldn't find anything too close Yesterday I put a fresh, brand new charged battery into P4 and whilst I was doing pre-flight checks, the DJI go app flashed a warning that the battery level is critical at 0%. I tried to restart the bird by switching it off but it wouldn't switch off. I removed the battery without switching it off and the green lights on the removed battery oddly stayed on. I don't know how long they stayed on for as I threw the battery into the Lipo guard bag and left it in a car. I continued on flying with another battery. When I got home I put the battery in question back into P4 and it showed the battery level at 97%. I took off and hovered the P4 for a couple of minutes with no issues. Should I risk using this battery again? Has anyone experienced this before? My initial thoughts were that perhaps the battery wasn't clamped property - hence the error and when i removed it while it was still on, it 'thought' it was still inside the aircraft for a few minutes.