BATTERY MONITORING TECHNIQUES

Various techniques for determining self-discharge rates of one or more battery cells, such as by determining a current leakage of the battery cell(s), are described. The techniques may improve the effective ADC linearity. An example of a technique may calculate the average time when each ADC digital code is observed, such as for a given battery cell or battery module, which allows the battery cell discharge rate to be estimated from the interval between the average time observed for neighboring, e.g., adjacent, digital codes. This approach allows the self-discharge rate of a battery cell to be calculated with high resolution even when the total cell voltage excursion is only a few least significant bits (LSBs).