85 kwh

Mission accomplished? That's what Tesla executives Elon Musk and J.B. Straubel might be asking themselves after running single-charge mileage tests of the company's Model S sedan, which could be making the near first customer deliveries in about a month. That's roughly 30 days ahead of schedule, ...

Let's compare: the battery pack in a Tesla Roadster today is 53 kWh. The pack in the Chevy Volt? 16 kWh. The Nissan LEAF? 24 kWh. The Hymotion/A123 kit to make your Prius a plug in car uses a 5 kWh battery. Now, how big might the ...