Abstract: A battery ledger management system, includes: a data collecting unit receiving battery production information from an external source, and receiving battery information data and vehicle information data from a data collecting device; a battery ID generation and management unit generating a unique battery ID for each battery unit based on the battery production information; a state information generation and management unit generating and managing state information, information on a current usage state of the battery for the battery ID of each battery unit using the battery information data and the vehicle information data; and a usage information generation and management unit generating and managing usage information, information on a usage history of the battery for the battery ID of each battery unit using the battery information data and the vehicle information data.

Abstract: A battery monitoring system includes a data receiver configured to receive battery information data and vehicle information data from a data collecting device connected to a vehicle, a battery management score calculator configured to calculate, based on the battery information data and the vehicle information data, factors affecting battery degradation among a charging habit, a driving habit, and a parking habit of a user, calculate, based on the factors, a battery management score, and store the battery management score in a database, and an information transmitter configured to transmit the battery management score to a terminal.