This UBEC is an external switching mode DC-DC regulator; it draws DC voltage from 2-3S 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 up to 8Amp. As the UBEC has such a powerful output capability, so it's particularly applicable for 30+ Class nitro helicopters and large fixed-wing aircraft.
Spec Check:
Output Voltage/Current (Cont./Peak): 5V@8A /15A or 6V@8A/15A (adjust via control switch)