Do you care about the screen size?
I suggest a lighter THINKPAD X6 1 (I use this but I'm a parallel import. . . )
The stability is good, and the 8-cell battery can last for 4 to 5 hours.
There is no need to buy a notebook if you want a big screen.
Heavy batteries have a short service life.
So it's better to stare at the disk with the desktop.