The BAC4000 is an mid level high-power density compact Motor Controller (inverter). These units are optimized for the latest in Lithium Ion battery technology and utilize the latest in field-oriented vector control (FOC) as well as ASI’s Proprietary adaptive sensorless start algorithms. ASI Controllers feature auto-tuning and are capable of delivering up to 95% of a motors maximum locked rotor torque without the need for complicated position sensors.