Set the end-of-charge current. The charger IC determines when to terminate the charge cycle based on the current going into the battery dropping below the given threshold during the constant voltage phase. At this point, the battery is considered fully charged and charging is completed. If charge termination is disabled, the charge current will naturally decay to 0mA, but this is rarely done in practice. This is because the amount of charge going into the battery exponentially decreases during CV charging, and it would take a significantly longer time to recharge the battery with a very little increase in capacity.
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