in NH, car has 16k miles on it, theoretical range dropped at V10 early October like most everyone whining on the forum. Mine didn't drop that badly....it was historically consistent 310 at full charge, dropped first to 308 after V10 (the next day), then 307, continuing down to 303 two weeks ago. Okay I wasn't worried, just rolled with it and kept reading from the experts on the forum here, appreciated all the insight. Anyhow someone mentioned here that the battery won't charge to 100% when cold, because when the battery warms up there is expansion involved so the system automatically limits how high a cold battery can charge. I tested this out yesterday, and now I get it. We had to charge to full yesterday for a brief trip, we were leaving the house around noon. Overnight car was charged to roughly 245 miles, close to 80% estimate.....my normal level (used to be 250 miles pre V10). at 7am (temp outside around 32F, warmer in garage) I jacked the charge up to 285 miles, that took a bit over an hour with my garage Tesla charger at 240V after this reached 285, I took the car out running errands for an hour, then returned to the house increased charger set point up to 100% charge, and it charged to 309 miles rated range. That's the highest I've seen since early October. Conclusion, temperature of battery is a larger factor than I had imagined when charging to 100%. I still think something changed with V10, but I'm not going to worry about.....just drive my car and be happy.