FLASHPACKS RC reciver pack are a capacitor that stores and releases power to ensure receiver voltage is always stable. While a BEC regulates voltage to the receiver, it can't perform properly without enough available power. Sometimes a servo or high-power brushless system can draw large pulses of current making the voltage drop and unstable; the result can be glitching, sporadic servo, transponder or gyro performance. To combat this, Receiver Voltage Stabilizer stores and reserves extra power to be released during these drops. This not only helps reduce the load on the BEC, but ensures voltage remains stable and consistent to the vital components of your system. This item plugs directly into any open channel in your receiver. This listing is for a single receiver pack by FLASHPACKS RC. All items are new and are sold as is with no returns due to the nature of the Hobby.