Tiny super powerful BEC designed for powerful 7.4V servos such as the Repeat 40kg Servo. 7.4V 5A output rating, barely larger than a JST servo plug with built in over-current and thermal protection. It sits inline on top of a servo JST connector then you can wrap in electrical tape or heatshrink it to the connector. Includes XT30 for power line. Wiring instructions below.