This UBEC is an external switching mode DC-DC regulator; it draws DC voltage from 2-6S LiPo battery, drops it to a voltage level that is suitable for your receivers and other electronic devices, and keeps providing the stable current output of 3Amp. It’s compatible with different brands of ESCs.
The 8A-UBEC is a switch-mode DC-DC regulator works with a 2-3S Lipo battery, it outputs a consistent safe voltage for your receiver, gyro and servos. It is very suitable for large scale RC models with many servos such as nitro powered RC helicopters and airplanes.
The Xrotor series ESC is a new and independent series hobbywing created based on the performance requirement on multi-rotor aircraft. The XRotor seriers speed controllers have significant improvements in throttle response, compatibility, usability over the existing series ESCs for aircrafts.