Yes. The battery charger will discharge the pack to about .8 volts per cell. If you let the batteries run down because of drawing current on their own, they will discharge as far as they can. I am still not familiar enough with NiMH cells, but I do know that you should not do that with NiCads, because of the posibility of the weakest cell reversing its polarity. The rule of thumb in conditioning NiMH cells is to fast charge at no more than their rated capacity, and discharge at no more that twice their rated capacity.

Les