If the bill defines a charge cycle as 100->0->100 then the restriction should be more meaningful right? Manufacturers would have to ship a larger battery and cap its capacity to get the same lifespan.

100% and 0% are essentially arbitrary, though. That’s the point. What is 100% for a battery? 4.1V? 4.4V? What’s 0%? 3.0V? 2.5V? Lower?