The superchargers might have an impact on battery life, but in practice they don't seem to have much impact. The reason is that unlike all other electric cars,

The superchargers might have an impact on battery life, but in practice they don't seem to have much impact. The reason is that unlike all other electric cars, they heat and cool the battery pack. The reason why leafs do have a demonstrated huge impact for using their dc fast charging (chademo) is because their batteries get really hot when using chademo. The tesla cools the batteries when charging, heating if necessary too, and that's why people don't such much or any impact on range over time, even when using super charging.