The system is a system for a battery exchanger that accepts a used first battery and provides a charged second battery. The above system includes a support target information receiving unit that receives, from a supporter that supports operation of a battery exchanger, an instruction for selecting the battery exchanger for which the supporter supports operation from among multiple battery exchangers. The above system includes a user information providing unit that provides the supporter with information on the user of the battery exchanger selected by the supporter, according to support value information indicating the value of the support for the operation of the battery exchanger by the supporter.