A battery pack charging apparatus includes battery modules assigned to charging groups, the battery pack charging apparatus includes a charging factor setter configured to set charging factors of charging groups of the battery pack based on battery information; a sequential charger configured to sequentially charge the charging groups of the battery pack based on the charging factors of the set charging groups; and a charging controller configured to control charging of the charging groups based on either one or both of an individual group control factor and a pack control factor while the charging groups are sequentially charged.