Esc 30amp with 2amp bec esc voltage :2-3 cells BEC: 2A Constant current: 30A (Max 40A less than 10 seconds) Weight: 25g Dimensions: 45 x 24 x 11mm Features: Safe power function:regardless of the throttle stick in any position the motor will not start immediately Throttle Calibration function:Adapt to different remote throttle travel difference, improve throttle response linearity, with a smooth, delicate feel and excellent speed linear speed Low Voltage Protection Mode ,Low-voltage protection threshold Packet content: 100% Brand New 1X 30A Brushless ESC