Ok, I was trying to figure out what the difference between the c rating on lipos. The 3s lipo I use has a 20c rating, 6400 mah. I have a 4s lipo with a 40c rating, 5000 mah going in soon. I tried to look up the difference and it all just confused me. Some said it didn't matter, some said it does. So that's why I am asking. I am running a 2400kv castle motor with a mmp esc, 14 pinon. Thanks for the help.