where Ct rt x is the C/3 capacity at current test; Ct rt 0 is the rated C/3 capacity at BOL;t x is the time of the later C/3 capacity where capacity fade has to be determined;t 0 is the time of the initial BOL C/3 capacity.7.10.3 Requirement7.10.3.1 High-power battery system The following data shall be reported: — initial 1 C capacity; — internal resistances, peak power and OCV versus time from the weekly power test sequence; — 1 C capacity versus cycling time (from bi-weekly 1C capacity determination); — capacity fade versus cycling time. 7.10.3.2 High-energy battery system The following data shall be reported: — initial C/3 capacity at RT and −10 °C; 60 © ISO 2018 – All rights reserved