Battery electrolyte level monitor, system, and method

A method of sampling the level of electrolyte in a cell of a multi-cell battery, the method comprising the steps of:

• inserting an electrically conductive probe into the cell;
• first current sampling the probe as a cathode to determine a cathode current signal, the first current sampling including limiting the current through the probe;
• second current sampling the probe as an anode to determine an anode current signal, the second current sampling including limiting the current through the probe;
• determining, as a function of both of the cathode current signal and the anode current signal, if the probe is in contact with electrolyte within the cell;
• and
• indicating if the probe is in contact with electrolyte in the cell.

A method of sampling the level of electrolyte in a cell of a multi-cell battery, the method comprising the steps of:

• inserting an electrically conductive probe into the cell;
• first current sampling the probe as a cathode to determine a cathode current signal;
• second current sampling the probe as an anode using PWM to determine an anode current signal;
• determining, as a function of both of the cathode current signal and the anode current signal, if the probe is in contact with electrolyte within the cell;
• and
• indicating if the probe is in contact with electrolyte in the cell.