Because Lithium-ion Batteries Have: Security Best, With A Large Electric Current, Long Cycle Life, No Memory Effect, Suitable for High-Power Lithium-iron Phosphate the Battery Cells, Can Also Most Likely to Be The Development of Battery Electric Vehicles in Mainstream, or the Other Purposes. This Paper Development of A Set Lithium Battery Monitoring And Management System, In Automatic Amount of Measuring, by Balance Board And Arduino Control Output Data, Overall Control by the HMI Monitoring System Charge And Discharge, to Achieve the Automatic Measurement And the Recording of Data, Overmuch Monitoring May Be Omitted Time And Save Manpower, And Will Be Provide Follow of Data by Developers to Improve, to Lower Cost, Save Time And Without Any Monitoring, And Simple Control the Measured Data Can Be Obtained.