A charging fee payment system is used for a payment process for a payment of a charging fee to charge a target apparatus with a charging apparatus. The target apparatus includes a memory, a controller, and a communication section. When the charging apparatus does not have a function to communicate with an external server that performs the payment process, the memory stores an unique ID code of the charging apparatus and electricity usage data indicative of the amount of electricity used by the charging apparatus to charge the target apparatus. The controller allows the target apparatus to be charged with the charging apparatus on a condition that the ID code remains stored in the memory. When the communication section becomes able to communicate with the external server, the communication section sends the ID code and the electricity usage data stored in the memory to the external server.