Tesla Semi, Roadster battery claims prove puzzling: beyond current knowledge? Page 2


Tesla Semi

Tesla Semi

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As Bloomberg explains, Tesla could place chargers at truck terminals where electricity is charged at a lesser commercial rate.

Additionally, Tesla can leverage its stationary battery packs to pull electricity from the grid throughout the day without causing usage spikes. Trucks would then pull power from those packs for their own use.

Morsy estimates this could bring down Tesla’s electricity costs to 40 cents per kilowatt-hour. The difference between that cost and the 7 cent per kilowatt-hour locked-in price is not much different from how Tesla subsidizes Supercharging for its cars.

With claims regarding the Semi out of the way, there’s an issue of space with the Roadster.

Tesla claims a range of 620 miles on a single charge, almost twice the range of Tesla’s other vehicles.

2020 Tesla Roadster

2020 Tesla Roadster

Enlarge Photo

Musk himself stated the range would require a battery pack twice the size of any battery the company currently makes for automotive use, and size is something the Roadster doesn’t have.

Morsy thinks the answer for this is to stack two battery packs in the Roadster’s floor. It’s difficult, but he believes Tesla’s engineers can solve any battery management issues this arrangement may cause.

He also believes the energy density of batteries will increase enough by 2020 that the Roadster will be able to pull off the feat.

“The trend in battery density is, I think, central to any claim Tesla made about both the Roadster and the Semi,” Morsy said. “That’s totally fair. The assumptions on a pack in 2020 shouldn’t be the same ones you use today.”

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