Yeah Racing Aluminum Case Hyper Booster Capacitor Black - YE-0027BK

Super capacitor with specs matched perfectly for high powered brushless systems. This capacitor helps deal with voltage sag during hard acceleration, with very low internal resistance the charge/discharge rate is very high making it perfect for touring car or drifters! The maximum voltage which this cap can take is 9v, making it able to help with voltage spikes or use with HV batteries! Wrapped in an aluminum case, ensuring proper cooling resulting in consistent performance!