As with every manufactured good, certain things are prioritized. Your small commodity laptop battery was likely made to be cheap and light, but not necessarily

As with every manufactured good, certain things are prioritized. Your small commodity laptop battery was likely made to be cheap and light, but not necessarily built to last a long time. That's like comparing a lawn mower engine and an engine in a car designed to last hundreds of thousands of kilometers. They just weren't designed with the same things in mind. Tesla especially has done a fantastic job with the chemistry and cooling allowing their batteries to have long life even when they are rapidly charged (which usually wrecks batteries).