[sudosysgen]

That's completely stupid. Tesla can and I'm fairly certain has the data on the exact number of amp-hours that flowed through each cell.

If they are going to void the warranty anyways, they can simply calculate the equivalent miles driven with the amount of Ah used and use that as a basis for voiding or not.

[Demigod33]

There may not be a good equivalent in case the load is different enough from normal use.

[sudosysgen]

I assure you, no house has worse load characteristics than a car.

Assuming the load characteristics of a house are the same as a car is a pessimistic assumption.

[Demigod33]

It does not even have to be worse to be a problem. Maybe the battery requires certain loads and capacity at certain times to work efficiently and not age as fast. There are too many unknowns.

[sudosysgen]

This is not how Li-Ion batteries work.