This Small and lightweight UBEC features a High efficiency switch mode design providing better heat dissipation when compared to linear voltage regulators. The shielded PCB design and output EMF coil makes helps provide a stable and low noise voltage output. This UBEC also features built-in reverse polarity protection.

Specs:
Input: 6V-23V (2-5S Lipoly, 2-6S Li-Fe or 5-15S NiXX Battery Pack)  
Output: 9V/4.5A (Less than 50mV peak to peak voltage @ 2A)
Dimension: 38mm x 13.6mm x 20.7mm(LxWxH)
Weight: 12.9g (wires included)