We bought a 2018 P3 a few years ago and just recently bought a 2018 X 100D with 17k miles. Our P3, with 58k miles, seems to hold a charge much longer while parked in the garage. Two days ago, we charged the X up to 74% and it stayed parked in the garage, this morning it was at 64%. Maybe we need to tweak some settings and/or run a diagnostic on the batteries? Any suggestions? Thanks in advance!