A battery swapping station configured to charge at least one battery individually accommodated in at least one battery charger, the battery swapping station comprising: at least two battery chargers, each of them configured to accommodate one battery; an AC/DC converter configured to convert external power provided in an alternating current, AC, form into a direct current, DC, form; a DC/DC converter including a first end connected to the AC/DC converter and a second end individually connected to the at least one battery charger to individually provide a part of external power input from the AC/DC converter to the at least one battery charger; and a controller connected to the DC/DC converter and configured to: control an operation of the DC/DC converter according to an operation in a standard charge mode or in a fast charge mode, wherein the standard charge mode is configured to provide lower maximum charging current compared to the fast charge mode, and when the at least two batteries are individually accommodated in the corresponding at least two battery chargers, then in the fast charge mode, the controller is configured to select a target battery among the at least two batteries and fast charge the target battery; characterized in that when the at least one battery is fully charged for a preset idle time, the controller is further configured to operate in a discharge mode for the respective fully charged battery, such that when at least one battery among the at least two batteries other than the fully charged battery is being charged, the controller is configured to change a charging direction of the respective DC/DC converter of the fully charged battery to charge the at least one battery other than the fully charged battery in the standard charge mode. at least two battery chargers, each of them configured to accommodate one battery; an AC/DC converter configured to convert external power provided in an alternating current, AC, form into a direct current, DC, form; a DC/DC converter including a first end connected to the AC/DC converter and a second end individually connected to the at least one battery charger to individually provide a part of external power input from the AC/DC converter to the at least one battery charger; and a controller connected to the DC/DC converter and configured to: control an operation of the DC/DC converter according to an operation in a standard charge mode or in a fast charge mode, wherein the standard charge mode is configured to provide lower maximum charging current compared to the fast charge mode, and when the at least two batteries are individually accommodated in the corresponding at least two battery chargers, then in the fast charge mode, the controller is configured to select a target battery among the at least two batteries and fast charge the target battery; characterized in that when the at least one battery is fully charged for a preset idle time, the controller is further configured to operate in a discharge mode for the respective fully charged battery, such that when at least one battery among the at least two batteries other than the fully charged battery is being charged, the controller is configured to change a charging direction of the respective DC/DC converter of the fully charged battery to charge the at least one battery other than the fully charged battery in the standard charge mode. control an operation of the DC/DC converter according to an operation in a standard charge mode or in a fast charge mode, wherein the standard charge mode is configured to provide lower maximum charging current compared to the fast charge mode, and when the at least two batteries are individually accommodated in the corresponding at least two battery chargers, then in the fast charge mode, the controller is configured to select a target battery among the at least two batteries and fast charge the target battery; characterized in that when the at least one battery is fully charged for a preset idle time, the controller is further configured to operate in a discharge mode for the respective fully charged battery, such that when at least one battery among the at least two batteries other than the fully charged battery is being charged, the controller is configured to change a charging direction of the respective DC/DC converter of the fully charged battery to charge the at least one battery other than the fully charged battery in the standard charge mode.