Sky RC Super mini 6S Lipo 6V 10A BEC Voltage Regulator Waterproof Alum Case

 The BEC is a voltage regulator that supplies a constant voltage to the receiver and servo. For ESC with a built-in Linear BEC, it will likely have only a limited ability to supply power to your receiver and servos without overheating protection functions. If you are using a 4 cells LiPo battery or more than a 12 cells NiCd/NiMH battery, you should consider using SkyRC 6S 10A Super Mini S-BEC. This S-BEC is small and light with wide input voltage from 6-25.2V. It is a waterproof BEC with over-current and over-heat protection functions. What's more, it is common for a switching BEC to attain 90% or higher efficiency.     
 
            
      Compact size(23x23x15mm) and light weight(30g)
      Wide input voltage from 6-25.2V (2-6 cells LiPo battery or 5-18 cells     
      NiCd/NiMH battery)     
      Over-current and over-heat protection functions     
      Fully-enclosed design for waterproof(IP67)     
      90% or higher efficiency     
      Less electromagnetic interference     
 
 
      ESC with built-in BEC
You must disable the built-in BEC functions of the ESC first. Follow the diagram below to disconnect the red wire from the ESC     
 
 
      ESC without built-in BEC
You can leave the red wire intact when using and ESC without BEC