Hello I am new to using 2018 13" MacBook Pro and I know there is a limit to the amount of times you can full charge and discharge the device before it wears the battery down. So my question is, if I use my MacBook when it is 100% charged and plugged into the charger am I still using a battery cycle? From my understanding at this point it should be taking power away from the outlet and not the battery. Is it any better for the battery than using it off power and charging it when the battery gets low?