The Hobbywing XRotor 15A speed controller has been designed specifically for multi-rotor applications. It comes with a 32bit MCU which increases responce times. Besides regular throttle signals with a refresh rate below 500Hz, the XRotor 15A ESC also supports OneShot mode throttle signals. In this mode the communication between the flight controller and the ESC becomes more agile, the throttle linearity is better and the response speed in much faster. The XRotor 15A adopted the DEO technology (Driving Efficiency Optimization)which has multiple advantages such as active breaking, higher driving efficiency for longer flight times and lower ESC temperature.
• Higher current endurance
• 32bit MCU
• High power for 250/300 level multi-rotors
• OneShot Mode Supported
• DEO Technology (Drive Efficiency Optimization), which is like Damped Light
• Intelligent and adaptive default settings
• Twisted-pair Signal cable to reduce interference
Continuous current: 15A
Peak current: 20A
Application: 250/300 class multi-rotors
Bought a few of these on recommendation from HK and LDPower for replacements. They seem to work fine. No problems to date. Good instructions included. Remember, no BEC on these so you will need a separate power source (5V) for your receiver etc. Will buy more of these if/when I need them.