I am having the same problem with 13” Mac Book Pro. I purchased a new power adapter and USB-C cable from apple ($125 together)… problem still persists. I turned off battery management … did not help. When I put my Mac into sleep cycle it will eventually charge… it usually takes 10 to 15 hours to charge this way but eventually it is recharged. Right now … I’m at 100%… I unplugged the power adapter… but it thinks that the power adapter is plugged in and charging. I think its a Catalina problem.