There’s otherwise an overheating problem; better regardless to “top it off” rather than to deep-discharge the batts. And better to just have a 220 charger in the garage.
https://www.youtube.com/watch?v=xVbpehsvdgY
https://www.youtube.com/watch?v=4cmnULjkdlQ
https://www.youtube.com/watch?v=690s62xEE5Q
Surviving winter with a Tesla
https://www.youtube.com/watch?v=s92G6s3pyGg
Will the computer on a Tesla allow the batteries to be deep discharged to the point of doing damage?