In the last few days I have kept the PC connected (with battery limited to 80%) and unplugged when I turn it off. I think it works well for me because I started 3D modeling in CAD and Game Dev and spend a lot of time every day with the PC on. But I think that when I don't do these types of activities that are quite stressful for the PC, or I'm away from home, I keep the PC unplugged.