Those don't have "a whole system dedicated to maintaining its temperature within ideal ranges" although now you've got me wondering whether a laptop that expend

Those don't have "a whole system dedicated to maintaining its temperature within ideal ranges" although now you've got me wondering whether a laptop that expends some energy to keep its battery warm would actually last longer in extreme cold than an otherwise-identical laptop that doesn't... of course one would need to also consider whether the keep-warm energy is drawn while plugged in (which would obviously let it last longer) or not (which I'm not sure about).