[lincpimp]

If you are running 2 of those batts in series, then your external wiring should be ok. I would still check all of you connections for a bad solder joint anyway, but if you had a bad connection on a series setup the truck would just stop moving. Sounds to me like the parallel connections in the pack itself came loose and one pack was left as a 3000 2s not a 6000 2s. You then probably overdischarged the 2 cells that were still connected. That would account for the heat and puffing. Give maxamps a call and ask for Jason, you may get another lipo or at least some sort of reson why it gave out.