need some advice with battery choice for the new trex 470L dominator.

[tanveer]

well going to pick up a trex 470LP dominator, im going for the one with the plastic bits as im sure it will be tasting the dirt more than i would want it too. Im not sure which battery packs to go with, midland helicopter website suggests anything 6s from 1400mah to 1900mah. Just dont want to order a few batteries and they end up being wrong and messing up the COG...

any help much appreciated