The full charge capacity of the battery in milliwatt-hours. Comparison of this value to the DesignCapacity property determines ...

The full charge capacity of the battery in milliwatt-hours. Comparison of this value to the DesignCapacity property determines when the battery requires replacement.  A battery's end of life is typically when the FullChargeCapacity property falls below 80% of the DesignCapacity property. If this property is not supported, enter 0.