At one point of time you will have to see ‘Charging Done’.
Point is that after 80% , it will change the charging mode to ‘very slow charging’. Probably takes around hour and half or two to reach 100%. Even after attaining 100% , it will be in trickle charging mode where it will turn on once in a while so as to compensate self discharge of the battery.
Do not worry, all these are taken care by BMS (Battery Management Service) of the vehicle.