As the transportation industry strives to electricity their vehicles, the onboard power source remains a weak link. Fuel cells and secondary batteries are often considered major candidates for providing the primary motive power or serving as load- leveling devices. Due to the relative maturity of the secondary batteries, much e and industry is devoted to making batteries re- liable and a vehicles. In addition to the development of new batteries with better capacity and power capabil- ity, an advanced battery management system is also required to better utilize the capacity of the batteries and to provide diagnostic information for the bene internal battery states such as energy remaining are not readily available for direct monitoring. The development of a battery monitoring system that accurately estimates the internal states from available external measurements such as voltage and current is thus important. Therefore, here we present a project dealing with the cause aforesaid. In this we shall implement a method to determine the battery state of charge. Battery state of health and state of Function will also be determined as pre-requisites for the purpose. This project uses system identi a monitoring system for lead-acid batteries in an electric vehicle. Speci that the proposed methodology provides can help estimate the energy remained in the battery bank (State of-Charge (SOC)) and the power capability of the battery bank (State-of-Function (SOF)).Software requirements will be LabVIEW for the Graphical User Interface. ort by academia ordable for the electri t of the driver. Unfortunately, the cation techniques to implement cally, the information