[jhautz]

I had one. I ran 2s for a while on it and didn't have any issues. I wouldn't go for more than that though.

I looked at it this way. A freshly peaked 6 cell pack has a higher voltage thatn the 2s lipo fully charged. the diference is that the voltage drops much quicker on the NiMH cells than it does with Lipo.

If you go lipo, make sure you have a low voltage cut off set up. The GTB doesn't have one.