This study aims to develop an Internet of Things (IoT) based Battery Management System that monitors battery operation and performance in real-time. They used an Agile Methodology to build a BMS Monitoring System, using the Vue js framework and Laravel. The battery monitoring system provides information on battery temperature, current, and voltage data, essential for monitoring battery conditions below or over limits. The interface is accessible via desktop and mobile devices. This research resulted in real-time temperature (temperature on sensor 1, temperature on sensor 2, temperature on sensor 3, and maximum temperature limit) , current (maximum current limit, current total, and minimum current limit) , and voltage (maximum voltage limit, total voltage, and minimum voltage limit) monitoring based on certain time intervals.