Doesn't it? It says:

> That usually means that if your battery is below 70% health within either 8 years or 100,000 miles, they’ll replace it for you.

Consider a car with 200k miles at 5 years. 5 years is within 8 years, so I don't see any way of reading "within either 8 years or 100k miles" that would not make that car covered. Similar for a car that is 15 years old with 50k miles.

But everything I've seen elsewhere says the warranty applies as long as you are within 8 years and within 100k miles.

Sorry, I was parsing the "either" incorrectly here.