Audi R8 e-tron
Did Audi make use of Tesla's open-source patents in designing the R8 e-tron?
We doubt it, but there's one similarity between the R8 e-tron and Tesla Model S that is impossible to ignore.
The R8 e-tron, like the Model S, make use of 18650 cells.
In the R8 e-tron, the cell count is 7,488. Those cells are placed in 52 separate modules. Total kWh listed for the battery pack is 91. The cells operate at 3.6 Ah.
Over in the Tesla Model S 85 kWh you'll find 7,104 18650 cells. These cells are believed to operate at 3.4 Ah.
So, ever-so slightly different then. Perhaps this similarity could lead us to conclude that if you're going to build a high-performance, long-range electric car, then the 18650 cell is the way to go?
Or, could it be that Tesla did share some of its battery ideas with Audi in developing the R8 e-tron? Remember, the R8 e-tron was cancelled back in the day due to Audi only being able to cram 48.6 kWh of battery into the car and the automaker being displeased with its total range. We wonder then, did Tesla provide a solution to Audi, either directly (through discussions) or indirectly (Audi checked out the Model S and found a solution for the R8), or is this all merely a coincidence?
Tesla Model S