Tesla has batteries. These batteries died. So Tesla’s batteries died. Nothing wrong with the title.
When someone announced that their cell battery is dead, I have never once in my life heard someone ask for clarification on whether the battery was incapable of charging or is simply depleted. I have also never once heard a correction of the person with the depleted battery when they announce that they have charged their phone.
I have also heard these same speech patterns pertaining to vehicles. It is odd to demand that a written work that is authored for popular consumption not to use the popular parlance.