Put your AirPods in the case and let them and them and the case. Depending on what type of case you may have, you may charge them wirelessly or with...
The light on your AirPods case will be green when it is fully charged. If they are paired with an iOS device, you can check the battery percentage. If you...
Yes, they will be charged; anyone who calls your 900 phone number will be charged. The person who pays the bills for the phone number calling will be charged.
You may try, but I do not think so. I never saw an option. Try emailing the duo maker (the app store should have that information/help center) and ask.