Help I put on the batteries first in my radiomaster tx 12 v2 before installing the antenna for about 5 minutes I didn't power it on and I was using 8800mah xbalog 4.2v 9.6wh have i damaged my controller

Help I put on the batteries first in my radiomaster tx 12 v2 before installing the antenna for about 5 minutes I didn't power it on and I was using 8800mah xbalog 4.2v 9.6wh battaries i damaged my controller ?