I had some extra cells laying around and I made up an 8 cell pack. I have had good luck with it. The stock esc and motor stay under 120f. It seems alot faster too. I wonder how it compairs to the speed of a 3 cell li-po?
Would be similar is speed straight off the charger but would soon die off compared to a good 3s lipo pack
SCT MMP / 2400kv
a 3s lipo is 12.6 fully charged. it would be kinda close at first but then the nimh will drop off very fast