LG Ultrafine 5K always keeps my Mac charging, is this bad? The LG Ultrafine 5k Monitor is great for Apple computers. But the thing is that it will always keep your Mac charging, whether you want it or not. Is this bad for the battery life?
It’s not actually charging. 

Your Mac uses the power from the charger for its power needs without going through the battery. If that power is not enough then it takes some more power from the battery. If not all power from the charger is needed and the battery is not full only then will the battery be charged.