I have a 2013 MacBook Air. No issues. I have open core legacy patcher on the Mac OS side to push me well past the cut off for the OS, but it’s slow. The Ubuntu side works great still. Good battery life and the battery is still the original, I believe. I don’t remember ever changing it out. Been meaning to switch to LMDE or something, but I had a number of false starts dual booting back when I did it and have been busy.