li-po ?

[Izzy]

I would say watch your C count on the pack - The MFU is relable for up around 3500 - 4500 mAh on NiMh packs so don't think it cna handle a 50 - 100C pack - it could fry it depending upon what gearing, motor style or trailer load.

Disclaimer - I have pushed these RC truck a bit to the limit and a lot further than the majority of our truckers. So the general guy will be fine. But if your try'n to pull a 95# dozer on a drop deck, up a hill, with a standard motor and no gear reduction you could do some harm even with a 3500 mAh pack - I did......bummer too.....

Chris