A battery service providing system, comprising: an electric vehicle control device configured to collect and manage operation characteristic information of a battery mounted to an electric vehicle and driving characteristic information of the electric vehicle; a battery service server communicatively connected to the electric vehicle control device through a network, wherein the battery service server is configured to collect diagnostic analysis data including a battery operation characteristic profile from the electric vehicle control device through a charging station while the battery of the electric vehicle is being charged at the charging station, wherein the charging station is configured to apply charging pulses with different AC charging currents and/or amplitudes to the battery and a plurality of voltage data are measured under the different charging currents and/or amplitudes; and a database connected to the battery service server so as to be accessed by the battery service server, wherein the battery service server is configured to: collect the diagnostic analysis data including the operation characteristic information of the battery and the driving characteristic information of the electric vehicle from the electric vehicle control device through the network and store the diagnostic analysis data in a diagnostic analysis data storage unit of the database; and determine a degree of degradation of the battery from the diagnostic analysis data; wherein the battery service server is configured to analyze the battery operation characteristic profile included in the diagnostic analysis data, in response to determination that the battery is charged within a preset degradation estimation voltage section and a plurality of voltage data are measured under variable charging current conditions, perform a linear regression analysis on the plurality of current and voltage data to determine an average value of dV/dI as an internal resistance value, determine the ratio of a reference internal resistance value to the internal resistance value as the degree of degradation of the battery, and store the determined degree of degradation in the diagnostic analysis data storage unit of the database. an electric vehicle control device configured to collect and manage operation characteristic information of a battery mounted to an electric vehicle and driving characteristic information of the electric vehicle; a battery service server communicatively connected to the electric vehicle control device through a network, wherein the battery service server is configured to collect diagnostic analysis data including a battery operation characteristic profile from the electric vehicle control device through a charging station while the battery of the electric vehicle is being charged at the charging station, wherein the charging station is configured to apply charging pulses with different AC charging currents and/or amplitudes to the battery and a plurality of voltage data are measured under the different charging currents and/or amplitudes; and a database connected to the battery service server so as to be accessed by the battery service server, wherein the battery service server is configured to: collect the diagnostic analysis data including the operation characteristic information of the battery and the driving characteristic information of the electric vehicle from the electric vehicle control device through the network and store the diagnostic analysis data in a diagnostic analysis data storage unit of the database; and determine a degree of degradation of the battery from the diagnostic analysis data; wherein the battery service server is configured to analyze the battery operation characteristic profile included in the diagnostic analysis data, in response to determination that the battery is charged within a preset degradation estimation voltage section and a plurality of voltage data are measured under variable charging current conditions, perform a linear regression analysis on the plurality of current and voltage data to determine an average value of dV/dI as an internal resistance value, determine the ratio of a reference internal resistance value to the internal resistance value as the degree of degradation of the battery, and store the determined degree of degradation in the diagnostic analysis data storage unit of the database. collect the diagnostic analysis data including the operation characteristic information of the battery and the driving characteristic information of the electric vehicle from the electric vehicle control device through the network and store the diagnostic analysis data in a diagnostic analysis data storage unit of the database; and determine a degree of degradation of the battery from the diagnostic analysis data; wherein the battery service server is configured to analyze the battery operation characteristic profile included in the diagnostic analysis data, in response to determination that the battery is charged within a preset degradation estimation voltage section and a plurality of voltage data are measured under variable charging current conditions, perform a linear regression analysis on the plurality of current and voltage data to determine an average value of dV/dI as an internal resistance value, determine the ratio of a reference internal resistance value to the internal resistance value as the degree of degradation of the battery, and store the determined degree of degradation in the diagnostic analysis data storage unit of the database.