Hey Andrew I have a few little things to ask you I am running 340 packs on my 2204 in my shockflyer and its good power on a 9 x4.7 at around 5 oz .... would I be better off with a thunderpower battery like an 730 in my new yak i just orderd ? becasue it wont be as light as the other one and im not sure if it is going to be enough power my only question here is really what can i expect for a difference between the power to weight ratio if I changed my battery and whats you r favorite set up with an aprox weight??