Two things I've never understood about my Model S. One happens nearly every day, and one just happened for the first time over the weekend. (1) Sudden change to battery charge number. What happens is, I walk out to car in the morning. Just walking by the car wakes it up, unlocks the doors. I always look in to see what the battery charge is on the dash as I'm unplugging the plug and rolling the cord back up to hang on wall next to HPWC. I usually charge to 90% and for my car, 90% means around 232, 233, 234, never quite know what it'll be. Lately it's around 234 a lot. BUT.... what I usually see is 228, 229, 230, or 231. Sometimes within minutes of the charge to 90% completing. And as I'm pondering this with some audible grumbles, climbing into the car and seated in the driver's seat, when I press the brake pedal to start the car, the 228 or 231 or whatever will suddenly change to 233 or 234. Happens nearly every day. So the question is, why does it do that? (2) Mystery re-charge that wasn't even accurate. Saturday night I had the car charging on the HPWC, and it finished at 21:42. Ok fine. I was watching a movie at the time, and my phone app buzzed. "Charging completed at 21:42 with battery at 234 mi" it told me. Nothing odd about that. What WAS odd was that my phone buzzed AGAIN at 22:01, saying "Charging completed at 22:01 with battery at 231 mi". I immediately took a screen shot: Why did it do that? I went out to check, and the dashboard said 234 miles. So why the heck did it send out a second notification to my phone, when charging had stopped nearly 20 minutes earlier? And why the wrong reading?