You can RTFM, or read posts here (this question is asked and answered every day), or you can do both. What you shouldn't do is ask a question that is answered in the manual, or without reading yesterday's answer to this question, or the day before's, or the day before that.
From the battery information section of the manual:
"There is no advantage to waiting until the Battery’s level is low before charging. In fact, the Battery performs best when charged regularly."
You may want to read that entire section of the manual, as this car is unlike any you've owned before (unless you've owned another Tesla, in which case you wouldn't have asked.)