Abstract: A charging apparatus for laptop computer with multiple-batteries is used in a first battery unit and a second battery unit. The charging apparatus comprises a micro controller unit; a first charging switch unit electrically connected to the micro controller unit; a second charging switch unit electrically connected to the micro controller unit; and a charging unit electrically connected to the first charging switch unit and the second charging switch unit. The micro controller unit controls the charging unit charging the first battery unit and the second battery unit via controlling the first charging switch unit and the second charging switch unit. The charging apparatus charges multi-batteries simultaneously.