Li-Po or NiMH? I'm confused.

[lipomax]

You know what, I think you might be better just going along with what Mike has recommended and instead of using Kokam SHD 3200's, going with higher capacity Polyquest like 5s 4400 mah. And since you're not racing, that would be better suited. You still get the extra 40% run time using the other batteries that don't have as much "punch" but enough for 50+ mph and 30 minute runs in first gear. Yeah, that's my final answer.