4S-6S 12v 3A UBEC

A UBEC (universal battery eliminator circuit) is purely a device that converts high-voltage (such as 25V from a 6S LiPo) to lower voltages to allow the full UAS to be powered from one primary battery source.

UBEC stands for universal BEC or sometimes ultimate BEC. It’s used when ESC doesn’t have built-in BEC, or standalone power system is required. They generally are more efficient, more reliable and able to provide more current than BEC