Got mine yesterday and charged them to 100% and played around with them briefly before going to bed. Left them out of the case. When I got up this morning (about 6 hours later), the battery was down to 76%. I did a 34 min elliptical workout with podcasts playing and battery went down to 70%. So, the drop from 76 to 70 is fine. I'm concerned about the overnight drop from essentially 100 to 76 with them just sitting outside the case. I left them out of the case when I left for work this morning and will check what they are when I get home in the evening. Anybody else seen similar behavior? They were sitting next to my Mac, but I hadn't actually paired them with the Mac yet, so I'm not sure if that would cause the drain. Thanks.