What Is a Battery Eliminator?

Battery Eliminator Circuit (BEC) is a circuit used to replace batteries to provide power. The battery-removing circuit was originally used in the case of using commercial power to convert to battery power. Now it is mostly used in battery-driven applications that require high or low power, which can be used to save battery requirements. For example, when the motor needs 12V and the control board needs 5V, a set of 12V to 5V battery-removing circuits is needed, and all only need a set of 12V batteries.

An early commercial battery eliminator was produced by Edward Rogers Corporation in 1925 as his "batteryless"

In the field of remote control models, BEC is part of Electronic Speed Control (ESC). ^[1]

BEC is also used in some motorcycles or ATVs, which can reduce the use of batteries and reduce the load. The part that originally needed the battery was replaced by a large-capacity capacitor, which can be used to reduce the pulse wave generated by the alternator. This is designed to provide power to the generator.