The green box-plots of pulsed C/5.7 5s and the mixed C/5.7 + C/20 show similar median ASI values around 16 Ohm cm -2 , whereas the mixed cells show larger box size up to 23 Ohm cm -2 . The C/5 cells show the highest median value of all pulsed cells of 25 Ohm cm -2 .As a consequence of an assumed thinner SEI from pulsed formation, in agreement with Wang et al. , we observe lower ASI values for pulsed formation compared to CC formed cells. The higher ASI values for the C/5 cell could indicate towards lithium plating or a thicker SEI due to more side reactions. Despite differences in the test protocol similar values can be found in literature for CC formed cells using the HPPC method [31][32] , or electrochemical impedance spectroscopy (EIS) .