Forced air means simply... a fan or blower. No freon chiller. The blower fans would take up roughly the same space as the current model. The freon chiller right now is in the side wall of the FEH, under the air vent on the rear window glass... so it's out of the cargo space now. The blower fans are in the cargo space now.

Look at watt-hours to get an idea of size.
Since we (they) are still talking about NiMH cells, they will be the same size per watt-hour.

They are lowering the voltage... keeping amp-hours the same as now, so that does mean a lower watt-hour battery, hence, you can assume a smaller battery... but I didn't see a watt-hour number.

With a smaller battery, you could keep the same watt-hours as now, with less voltage, by doing a 30-70% cycle, vs. 40-60%. Add better electronics mentioned, and a 275v battery going 35-65% may be able to porovide the same MPG boost as a 330v 40-60% battery.

Will the 275v battery add the same fuel economy keeping the 40-60% range... I don't see how... unless other areas are improved so much to over-compensate for the weaker battery.

The 275v battery is for sure a weaker battery. It just sounds like they are going to utilize it better than the 330v one we have now... perhaps not baby it as much as ours.
-John