I just got my AirPods 2. I put the charging case with the AirPods inside of it on top of my Mophie wireless Qi charging base. The charging light on the AirPods case came on, in the same way that it does when I plug in the USB charger. But this morning when I woke up, I opened the AirPods charging case and my phone told me that while the right AirPod and case were 100% charged, the left one was only 8% charged. Does this mean they didn't fully charge on the Mophie wireless charger? Do they charge one AirPod at a time, first right and then left? I've never owned AirPods so I don't know how it works. Thanks.