Patent attributes
An electric power supply system includes a first power storage, a second power, an input, and a processor. Information including priority information is to be input through the input. The processor is configured to determine whether the first power storage is charged up to a first target residual capacity and the second power storage is charged up to a second target residual capacity by a timing at which at least one of the first power storage and the second power storage starts discharging. The processor is configured to charge either one of or both of the first power storage and the second power storage according to the priority information when it is determined that the first power storage is not charged up to the first target residual capacity and/or the second power storage is not charged up to the second target residual capacity by the timing.