Currently, the high-power Li[NiCoAl]O_2 (NCA) 18650 cylindrical cell has been increasingly interested in industry and considered as an operating source in electric-powered application such as electric-vehicle (EV) and frequency regulation battery energy storage system (FRBESS) that basically require high C-rate in a short period of time. For this reason, this research properly provides good information of high-power NCA 18650 cells from systematic approach based on environmental tests, state-of-charge (SOC) and degradation for state-of-health (SOH). From environmental tests of vibration and shock with some conditions, discharge capacities and internal resistances are compared before and after. Electrical circuit modelling (ECM)-based SOC estimation considering extended Kalman filter (EKF) and cell degradation considering cycle-life test are additionally carried out and analysed. Consequently, according to this systematic approach, it is capable of providing the solution for stable and efficient operation of electric-powered application.
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