This has been a sporadic problem that is now progressively getting worse. Some days no issues. Lately, drive it, park it, return even immediately sometimes, ZERO Power. No lights, nothing. I disconnect the positive ground on the battery then reconnect 15 seconds later, jeep starts right up. Now its almost stalling a traffic lights with the AC on. (voltage gauge drops) No codes or check engine lights... Any thoughts? Sometimes I hear a clicking sound behind the glove box when I'm trying to crank her up...
I'm baffled.

 

Sounds like you have a bad connection. To start clean the battery terminals or replace them. Check the battery cables to make sure that they are not corroded. Also clean all of the grounding points which include battery to fender, oil dipstick, 2 at the coil depending what year you have? rear of the head to the fire wall and make sure that the starter connections are clean and make sure that the mounting area between the starter and the block is also clean.