Charge managing system, charger, and program

A charger that performs charge to an electric vehicle, wherein

• the charger receives a charge power of the charger calculated by a charge managing server that controls the charger and that calculates a charge power of the charger, and
• the charge power is calculated based on power that can be used for charge from a power receiving device which receives power to be used for charge from an external device, power that can be used for charge from a storage battery that accumulates power to be used for charge, and rated output power of the charger.

A non-transient tangible computer readable medium containing instruction which, when executed by a computer, allow the computer to perform the following instructions:

• a communicating unit that acquires information on power that can be used for charge from a power receiving device which receives power to be used for charge from an external device, power that can be used for charge from a storage battery that accumulates power to be used for charge, and rated output information on a charger that performs charge to an electric vehicle, and
• a charge-capacity calculating unit for calculating a charge power of the charger, based on power that can be used for charge from the power receiving device, power that can be used for charge from the storage battery, and rated output power of the charger.

A charger that performs charge to an electric vehicle, wherein

• the charger receives charge power of the charger calculated by a charge managing server that controls the charger and that calculates the charge power of the charger to the electric vehicle, and
• the charge power of the charger to the electric vehicle is a value which is obtained by subtracting charge power that is being used by other chargers from the power that can be used for charge from the power receiving device.