That's an interesting idea!
I have an extra GBA SP battery too!
Longer running time would be awesome, given the extra power that multi-gearing and upgrading the steering motors draws.
Seems to me you might be able to get away with just the dropping resistor, but I haven't done the math yet.
I guess I need to see if they have a low voltage regulator for this task as well.
I guess I may have to bite the bullet and buy out my store's remaining stock of ZZMTs just to have "mod fodder"!!
I've destroyed one MT trying to do the articulation mod, but I can do the other engineering mods all day!
