“That is a great question, and the safest answer is to follow the guidelines provided in your user manual! A good rule of thumb for most EVs is to keep them plugged in while they are not being used, but since the regulations and technology can change at any time, it is best to check directly with Tesla.
You never want the charge level to go down to zero or let the car battery constantly function on the lower end. Similar to a cell phone battery, the car can adapt to perform at a lower level, which means your battery will drain faster than it should.
Here are some helpful tips regarding charging your battery: