Has anyone heard any rumors about being able to swap out the stock battery pack to upgrade to the new Li battery when they come out? Are there any engineers out there have any knowledge if the charging system would have to be different for the Li batteries?
Enerdel has a potential lithium product that can replace OEM NiMH. They claim to be able to produce them very cheaply. Argonne Lab tests EnerDel-equipped plug-in Prius - AutoblogGreen