This folder contains the following files: 1) A PDF file named "Experiment_Description_2020-03-02_ESS-Efficiency-Test" - This file gives detailed information about the ESS Efficiency Test conducted at Smart Grid Lab, Merz Court, Newcastle University, UK. 2) A Text file named "Format_Readme_2020-03-02_ESS-Efficiency-Test" - This provides information about the data columns given in the CSV file. 3) The six CSV files, whose names are given as follows: (i) 2020-03-02_ESS-Efficiency-Test-Data_Power_1kW (ii) 2020-03-02_ESS-Efficiency-Test-Data_Power_5kW (iii) 2020-03-02_ESS-Efficiency-Test-Data_Power_10kW (iv) 2020-03-02_ESS-Efficiency-Test-Data_SoC_1kW (v) 2020-03-02_ESS-Efficiency-Test-Data_SoC_5kW (vi) 2020-03-02_ESS-Efficiency-Test-Data_SoC_10kW