Antispark is a handy component that prevents sparks from jumping when the battery is plugged into the drone. This is caused by the fast charging of the capacitor on the ESC and is especially noticeable in 6S drones. In addition to the unpleasant sound, the spark gradually scorches the battery connection connectors, increasing their transient resistance and shortening their lifetime. Antispark is suitable for 3-6" FPV drones.