PS - The suitcase computers needed AC power, too. At
best, some of them
had conversion kits for 12V car batteries. In my opinion, if you're
tethered to AC power, then it's still not portable* even if it were
pocket-sized.
Cerrtainly over here, the term 'portable televison' meant a TV set that
was small/light enough to be carried (and had a handle :-)), but which
needed soem kind of external power source to run. Often the mains, but
many models coudl also run froam 12V car battery.
I would not reject a similar definiton for 'portable computer' out of hand.
-tony