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Gigafactory batteries might have a Prius application
Source: Next Big Future: Gigafactory batteries and factory productivity
The basis of the energy storage system of Tesla products are lithium-ion cells in the 18650 form factor. These cylindrical cells have a diameter of 18 mm and are 65 mm in length, a size used for the batteries of laptops. Cylindrical cells are generally less expensive (costing 190–200 dollars per kWh as of 2014) than large format cells whose active layers are stacked or folded (approximately 240–250 dollars per kWh).
The battery cells that will be produced at the Gigafactory are of a new form factor, larger than the 18650 cells used in the Model S and Model X automobiles. While the cells were originally expected to be at least 20 mm in diameter and 70 mm in length,revised specifications for the optimized form factor are 21 mm (0.83 in) by 70 mm (2.8 in)....
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