10.1 Leakage Current Effects on Battery Capacity

To determine how fast a leakage current on the battery will discharge the battery is an easy calculation. The time from full to discharge can be calculated by dividing the Amp-Hour Capacity of the battery by the leakage current. For a 0.1-AHr battery and a 75-nA leakage current (100mAHr/75nA = 250000 Hours), it would take 1333k hours or 152 years to discharge. In reality the self discharge of the cell would be much faster so the 75-nA leakage would be considered negligible.