Yes, but other Toyota/Lexus hybrids have 1.7kWh NiMH batteries and just US sales of those other NiMH hybrids from September accounts for 27.6MWh of battery capacity.
In Japan Toyota sold 132k cars a significant percentage of which would be hybrids, although a higher proportion of Prius aqua (c) and they also have the Prius alpha which uses a lithium battery.
In Europe, sales numbers of smaller but there they also have the Auris hybrid (liftback battery) and Yaris hybrid (c size battery)
Given Toyota has been selling over 1M hybrids per year, I'd be interested in knowing just how much they manufactured last month at their 99%-owned NiMH plant.