Automatically analyze battery impedance data with a pre-defined model.

- This application executes equivalent circuit analysis for battery impedance data with fixed model. It is the most effective for Li-ion batteries with mΩ order impedance.
- Click the “Select impedance data” button and select the impedance data you would like to analysis.
- Data must be CSV (.csv) or ZView (.z) file format.
- Column names for frequency, real part of impedance and imaginary part of impedance data should include “FREQUENCY(Hz)”, “R” and “X”, respectively. Please check the provided sample files.
- If you obtain the impedance data via HIOKI’s products (BT4560, IM3536, IM3570, IM3590, or IM758x Series), you can directly use it as an input file even if the column names are different from the ones above.
- After the file selection, equivalent circuit analysis will begin. After the analysis is finished, the Nyquist (or Cole-Cole) plot for the fitting results will be shown. You can interactively play with the plot. There is a menu bar on the top right of the plot. With this menu bar, you can download the plot data as a csv file and also as an image file.
- Since the analysis solver uses random numbers, the fitting result will differ each time even if the input data is the same.
- By clicking the “Reset” button, all the data will be deleted.

With this web application, you can draw Nyquist (or Cole-Cole) and Bode plots for multiple impedance data simultaneously.

- Click the “Add impedance data” button and select the impedance data you would like to add to the plot.
- Data must be CSV (.csv) or ZView (.z) file format.
- Column names for frequency, real part of impedance and imaginary part of impedance data should include “FREQUENCY(Hz)”, “R” and “X”, respectively. Please check the provided sample files.
- If you obtain the impedance data via HIOKI’s products (BT4560, IM3536, IM3570, IM3590, or IM758x Series), you can directly use it as an input file even if the column names are different from the above ones.
- After the file selection, the Nyquist (or Cole-Cole) plot and Bode plots will be shown. You can play with these plots interactively. There is a menu bar on the top right of each plot. With this menu bar, you can download the plot data as a csv file and also as an image file.
- By clicking the “Back” button, the last input data will be deleted.
- By clicking the “Reset” button, all the input data will be deleted.

With this web application, you can draw Nyquist (or Cole-Cole) and Bode plots as "3D graphs" for multiple impedance data simultaneously.

- Select the third axis of the 3D plot from the “Select the third axis” tab.
- Select the type of the 3D plot from the “Select the plot type” tab.
- Click the “Add impedance data” button and select the impedance data you would like to add to the plot.
- Data must be CSV (.csv) or ZView (.z) file format.
- Column names for frequency, real part of impedance and imaginary part of impedance data should include “FREQUENCY(Hz)”, “R” and “X”, respectively. Also, the input file must include the data for the third axis you selected in the step 1. Please check the provided sample files.
- If you obtain the impedance data via HIOKI’s products (BT4560, IM3536, IM3570, IM3590, or IM758x Series), you can use it as an input file after adding the data for the third axis if needed. Column names may differ from the above ones (“FREQUENCY(Hz)”, “R” and “X”).
- After the file selection, the 3D plot type you selected in the step 2 will be shown. You can interactively play with the plot. There is a menu bar on the top right of the plot. With this menu bar, you can download the plot data as a csv file and also as an image file.
- By clicking the “Back” button, the last input data will be deleted.
- By clicking the “Reset” button, all the input data will be deleted.