Patent ID: 8164341

Claim:
A system of only one capacitor and only one amplifier for measuring voltage of a cell in a plurality of cells connected in series and verifying measurement accuracy for the cell, said system comprising: a capacitor for storing a charge of one of a plurality of cells; at least one switch electrically connected to said capacitor for selectively connecting the one of the plurality of cells to said capacitor; an amplifier electrically connected to said capacitor; a primary analog-to-digital converter (ADC) having an input in electrical communication with said amplifier for receiving an analog voltage supplied by said amplifier and converting the analog voltage supplied by said amplifier into primary digital voltage data; a secondary ADC having an input in electrical communication with each of the plurality of cells for receiving an analog voltage supplied by the one of the plurality of cells and converting the analog voltage supplied by the one of the plurality of cells into secondary digital voltage data; and a controller in electrical communication with the primary ADC and the secondary ADC for receiving the primary digital voltage data and for receiving the secondary digital voltage data, wherein the controller is configured to compare the primary digital voltage data to the secondary digital voltage data to determine whether the primary digital voltage data matches the charge of the one of the plurality of cells.