Patent ID: 7619392

Claim:
A battery utilizing input charging voltages to verify charging failures, comprising: positive and negative input terminals; a cell pack coupled to drive the positive and negative input terminals; a battery management unit (BMU) including a microcontroller; a charge transistor (C-FET) coupled between the positive input terminal and the cell pack and coupled to be controlled by the BMU; a discharge transistor (D-FET) coupled between the positive input terminal and the cell pack and coupled to be controlled by the BMU; a current sense resistor coupled between the negative input terminal and the cell pack; a current input analog-to-digital converter (ADC) coupled to the current sense resistor; and a voltage input analog-to-digital converter (ADC) coupled to the positive and negative input terminals; wherein the BMU is configured to utilize charging voltage values from the voltage input ADC to verify charging failures when a positive charging current into the battery above a desired current threshold level is detected using the current input ADC when the battery is not in charge mode and when a information handling system is configured to receive power from the cell pack and not from another power source.