Electrochemical impedance spectroscopy (EIS) analyzer and method of using thereof

A method, comprising:

• selecting a plurality of cells of an electrochemical device for concurrent impedance testing of at least a subset of the selected plurality of cells;
• selecting a channel input of an electrochemical impedance spectroscopy (“EIS”) analyzer from a plurality of channel inputs for each of a plurality of subsets of the selected plurality of cells for concurrent impedance testing;
• controlling a matrix switch connected between the electrochemical device and the EIS analyzer to align each of the plurality of subsets of the selected plurality of cells of the electrochemical device for concurrent impedance testing with its respective selected channel input of the EIS analyzer;
• concurrently injecting a test waveform into each of the plurality of aligned subsets of the selected plurality of cells of the electrochemical device;
• controlling the EIS analyzer to receive a waveform on the selected channel input of the EIS analyzer from each of the plurality of aligned subsets of the selected plurality of cells of the electrochemical device for concurrent impedance testing via the matrix switch in response to the injected test waveform;
• and
• monitoring an impedance response of each of the plurality of aligned subsets of the selected plurality of the cells of the electrochemical device in response to the injected test waveform.