@_thegeoff So you'd want a laptop, minus the human interfaces (in both directions), but still with a battery? If you didn't want the battery, then lots of single board computers with an enclosure around them would match these requirements, and some of them might even match all the unstated requirements (perf, amount of storage, kinds of network interfaces available, ...). It's obviously a much less well supported setup than a laptop, though.
If you mean laptop _with_ a screen, but without input devices, then you might find form factor of Novena (the ~laptop) interesting.