The 2013+ models don't do a reconditioning cycle since they use Lithium Ion batteries. The 2010-12 models used Nickel Metal Hydride batteries, and they need to be conditioned every so often to maintain peak efficiency and reduce the memory effect. Basically what it does is it drains them to a set point, then recharges them to max voltage, so in order to do that it uses the ICE to propel the car and charge at the same time, EV is disabled during this time other than regen braking. I do something similar with my RC NiMh packs, I put them on a computer controlled battery charger that will discharge them at a controlled rate based on he amp draw you program in, then will recharge them to max voltage, and repeat the cycle for how many times you programmed in. I have been able to recover a couple weak packs this way, and it keeps my strong packs in top condition.
Lion, Lipo and Life batteries are completely different, and dont have memory issues like NiCad and NiMh batteries do, in fact if you discharge a Lion. ipo, Life below a set voltage you destroy the pack, same goes for overcharging. The car keeps the battery voltages per cell to the correct voltage and never lets an individual cell get above or below a certain point, but never needs to condition them.