[jimbob]

i've ran an evx on 6,8,12,14 cells and its all good people even use 18 cells but thats for crawlers

anyway with the stock motors (550 titans) 14 cell is fine really that is what most people do for a quick power boost
as for slowing down :010: paralell is good yes

or you make a connector to short one of the plugs and put the battery in the other
thus having a complete curcuit, the battery needs to be connected to the wires that lead to the receiver unless you are running a ubec or receiver pack..
you know this as the light will come on even without the extra connector clip..
then jsut go have some fun