I said I would love to see some graphs on these packs. Well since I acquired a Data Logger, here it is:
This run is 4S 4500mah Turnigy Lifepo4 in an E Revo with the following setup:
HVmaxx 4400 running a sintered rotor w/5mm shaft
gearing is 14/52 using Mod 1 gears
MM Pro
It will point the nose to the air almost at will and will flip over backwards with good traction.
Still better than the A123 cells.
Looks like about 2.75 volts per cell under a 108 amp load. Check this out.