Volumetrically speaking a 14500 has ≈46.534% the volume of a 18650. If we were to translate the technology of an VTC5A cell inside one of these cans, at a (let's say) 45% effective inner space or close, the cell would at least have 1100+mAh of capacity and due to better thermal characteristics its discharge rate would clock 12A continuous with ease.

Just saying.

:-)