time to do a few CCA test duplicating what Joel Wiseman did earlier in video below. 200 amp for 30sec, 10sec and 20sec cycle.
reason for duplicating values Joel used is 200amp is about what R1200GS draws cold. just as important data produced will dovetail into Joel's excellent work.
actual amp hour capacity for tested LiFePO4 battery will be part of new data generated.
battman ... thanks for the pic's... there's several types of BMS for LiFePO4 batteries ... most common is a intelligent shunt, when selected voltage is reached for that cell. current is shunted to ground to allow rest of cells to reach full voltage. if you have any more angles, would you send them to me or post em.
Earth-X could be using both prismatic and cylindrical cells, depending on amp hour battery. note there can be substantial differences in actual CCA delivered. either due to different cells and/or cell to cell construction.