The VCU acts as the vehicle's "brain," managing power output and coordinating subsystems; the MCU controls motor speed and torque; and the BMS monitors and protects the battery. . While working hands-on in the electric vehicle domain, I have had the opportunity to explore two of the most critical systems that define an EV's performance and safety: the Vehicle Control Unit (VCU) and the Battery Management System (BMS). At first glance, these may appear to be isolated. . The Vehicle Control Unit (VCU), Motor Control Unit (MCU), and Battery Management System (BMS) are three core technologies that support the efficient and safe operation of new energy vehicles. This includes everything from two-wheelers like bicycles and scooters to airborne drones and even the ambitious frontier. . Battery Management Systems (BMS) and Vehicle Control Units (VCU) play pivotal roles in the modern automotive industry, driving advancements in electric vehicles (EVs) and hybrid electric vehicles (HEVs). The BMS system monitors battery voltage, temperature, fault status, among others and the VCU system samples. .