[schiffern]

>The Tesla Model S 85 kWh battery has 0.57 MW/kg [2]

Note that your source is from 2015. The Model S battery of today has a higher capacity (100 kWh) and has undergone constant lightweighting improvements.

[danbruc]

This article [1] says that it is now 0.65 MW/kg which is a 15 % improvement.

[1] https://www.teslaoracle.com/2022/02/18/model-s-plaid-battery...