Is it bad to run the battery down close to empty all the time? On ICE, I'm used to driving until the red light is on for awhile and using an EV I usually drive until I'm down to <20 miles range left on the Tesla and <10 miles range in other EVs (e.g. Leaf, etc.). Is it bad to run it down that low? I don't run it to empty but usually the car is complaining about low charge, etc. On the other end, I charge up to 80% or 90% only and never up to 100%.