I work in two offices that are 93 miles apart (Norfolk and Wallops Island, VA). My round-trip commute when I work in our Wallops office is 186 miles, three to four days a week. It's a rural, isolated area, so there are no superchargers or destination chargers along the route. On a warm or mild day, I can make the round trip on a 90% or 80% charge, with plenty of juice left over. On colder days, obviously, I suffer some range loss. (Yesterday, for example, I started with 283 miles of range and was down to 47 when I got home. Average temperature was 40 degrees). 99% of the drive is highway miles, and I only experience 1 or 2 miles of phantom drain when the car is parked.
So, to hedge my bet, I like to charge to 100% on cold days. I use Scheduled Departure, so charging stops roughly fifteen to twenty minutes before I leave in the morning. I've read so many differing opinions on when to charge to 100%, how often one should, or questioning whether one should at all, that I'm rather confused. What's the best practice here? Am I okay charging to 100% a couple of days a week as long as I'm on the road shortly after charging is complete? Am I shortening the battery life by doing this? I plan to bat my eyelashes at my employer and push for a couple of destination chargers in our parking lot, but that will be a long way off, and Winter Is Here.