Originally Posted by
Shawner85
Yeah I would wait until the truck arrives, throw your 2 x 3 cell batteries in parallel (so the truck is only seeing the 11.1v) and see if your happy with it. If not ask yourself if its almost enough power or not even close. If its almost enough pick up some 2 cell packs and run them in series. If its no where near enough power I would consider picking up a new esc.
Never run different batteries in parallel. If you mix a 2 and 3s it will spike the voltage on the 2s, swell it and possibly have it catch on fire. You can hook them in series just fine but if you want to use them for more than just a test they need to be the same mah capacity as well.