EnerDel's lithium-titanate battery has been independently tested by the Center for Transportation Research of the Illinois-based Argonne National Laboratory. For the tests, a stock Toyota Prius had ...

Popular Mechanics took a prototype plug-in 2009 Prius for a short test drive, which might be the first PHEV to market. The Prius they ran around still uses the Prius’s current nickel-metal hydride ...