Crackling static noise in audio with 30 pin lightning adapter when battery is full

Anyone else get a really bad crackling static noise through the audio when using the 30 pin lightning adapter and the battery is almost full? I am using an iPhone 5, BMW iDrive with the Y audio and USB connection. I did not have this problem with the 4S and the normal 30 pin connector. The lilghtning 30 pin adapter seems to create interference when the phone's battery is nearly full. I also see the warning message indicating that charging is not supported - and according to the troubleshooting guide this is normal - but what about the noise????