Yokomo Competition ESC Capacitor. This optional capacitor is great for the serious racer. Being mounted directly off the ESC battery leads, this capacitor will allow for a more stable voltage to enter the ESC by supplying a little boost when the ESC has a slight power drop. These power drops can happen under high load or sudden throttle bursts. This capacitor is non-polar meaning there is no correct positive or negative lead. Simply solder to your ESC battery leads and reap the benefits of this great capacitor. Package includes one capacitor.