i have order capasitator 3caps

can i just have it to any esc , add more ? they have alreade capasitators, more is better or wrong?

is this okey do with cheap shit china tsky esc ? add more
i have couple old cars and old combos i want build them to work good again just for fun.

does the extra capasitators help old shit esc from china?

HOW DO I SOLDING extra capasitator bank ?
same as the stock capasitator is? soldèring them there ?