hey guys, i'm going to be running 3 different tekin set ups and this is the first time i have ever had to worry about capacitors. Anyways, here is my set up:

rx8 - 4.5t sc4x sensored - 2s lipo

rx8 - 1400kv sensored - 6s lipo

rs pro - 8.5 t sensored - 2s lipo

Do i need a capacitor for any of these set ups and if so, which ones do i need? What do the capacitors do?

Thanks!
kyle