I’ve never heard hard driving leads to battery degradation. Did I miss the memo?
I thought you posed an interesting question. So I did a little research, my conclusion is that rate of battery discharge is just as important as rate of charge in terms of how a battery degrades. The issues relate to thermal expansion and contraction of the cells; as well as the number of full cycles that a battery goes through. (Note that battery aging is also a factor, but in this conversation we are talking about a 2022 model year, so they are all about the same age...)
If the rate of change is an important factor, here are some numbers that provide scale for different activities:
- Charging at home, 48Amps @ 240Volts = Charge Rate of 11.5 kW per hour.
- Going 70 miles per hour @ 320wh/mile = Discharge rate of 22.4 kW per hour.
- Peak Supercharging rate @ 250kW = Charge Rate of 250 kW per hour.
- Peak Plaid Horsepower of 1020 HP = Discharge Rate of 761 kW per hour.
So, in terms of instantaneous (not continuous), amperage rates going through the battery, the highest rates are achieved when you are doing 0-60 mph time trials (or that sort of thing...)