The Hobby King ones are for use with receivers only, they won't work with an ESC.
This is one occasion where you need the original to avoid damage to your ESC. There isn't a cheap alternative as the Novak original came with additional circuitry to suit that ESC. This is the one you need:
http://www.teamnovak.com/products/di...power_cap.html
Either get it direct from Novak, or contact CML Distribution who are the Novak UK agents. You could also PM Keith Robertson (KRob on here) who works there and ask him for advice. Take it form someone who has tried this on other ESCs and had to send each one for repair - use the original capacitor. Pay less and pay twice! HTH
