Hitec RCD 59047 Energy Sport 40 Amp 3.5mm Bullet Smooth Linear Throttle Response ,Thermal Overload Protection ,Signal Loss Protection Low Voltage Cutoff, Pre-wired with Standard Battery & Motor Connectors, User Friendly Optional Programming Card, Hate's Legendary Customer Service and Warranty Continuous / Burst Current Rating: 40A / 50A, Battery / Cell: 5-12N / 2-4Li, BEC Output: 5V / 2A