A:AnswerAbsolutely. With the battery and power efficiency I've run it for several hours unplugged. Works just fine.
Huge assemblies may stress the system and will require it to be plugged in.
A:AnswerYes. I use mine at work and have it plugged in via a USB C hub/dock and it charges fine. It's the port on the left closest to the trackpad. The port above does not charge.
A:AnswerYes, it can be charged via USB-C. That's how I use mine at work connected to a USB-C hub/dock. It needs to be plugged in to the bottom port (closest to the trackpad). The one on top of it does not charge the laptop.