Where did you get the 100% and 50% numbers from the HondaLink app or from the infotainment screen? If from the infotainment screen that is not the amount of battery charge that is just an estimate of EV range, that estimate can vary quite a bit over time based on temperature and other factors, even if you haven't driven the car. The EV range is also well known to be inaccurate when the car is brand new, it gets more accurate after several days of driving.