exactly what is a BEC?

[syber70]

I see some people talking about them, adding them to their ESC's, but what does it do, and how do you know when to add one?

 

[dpdsurf]

It overrides your SC in providing power to your servo(s). Many ESC's internal BEC's that provide less than 5apm. You can program a castle BEC up to 10amps. Increasing amerage to a hich torque servo will maximize performance and prevent overloads on the ESC. Generally speaking, scalers do not tend to need them, comp crawlers with digs do.

 

[islandcrawler]

BEC stands for battery elimination circuit. This circuit powers the servos and Rx. its basiscally used in situations where one would not have the space to mount a rx pack or is trying to save weight in a particular setup.