Why is my connect controller button not working?!?

I have been trying to connect it and I just makes s click noise. My controller has just been flashing and the batteries are the same charge since it's a battery pack please help me!!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0