just bought this battery from drones etc on May 30th 2015. I barely used it and today I took it up and seen cell damaged and landed it. Power off and on and retried same thing. Was hoping it was because the battery discharged from sitting. Recharged it and tried again the cell damage warning came right back on. Just set it up at home to get some pictures, and says its normal now, but as soon as I fly the warning will come back. Also I just noticed DJI battery's only have a 6 month warranty FML!!!