How long is the battery of the AirPods 2 case supposed to last if I use my AirPods for about 8 hours a day? A day and a half? I want to make sure the battery if my AirPods case isn’t defective but I am aware that I use the AirPods a lot (pretty much 8-9 hours a day) so the AirPods case charges my AirPods multiple times a day