Hi Guys, we try to build a cost model for cylindrical EV-Batteries in one of my university classes. From a manufacturing perspective, the achievable winding speed of cells is going to be an important factor. Therefore: does anyone of you know how long it takes to wind a 18650 jelly roll? Or even better, does anyone of you know how fast those machines wind (in rounds per minute) in general? I know it's not really Tesla's business (yet) but maybe someone of you knows something helpful... Thank you guys in advance!