An airpods pro case with a replaceable battery and USB-C charging.
And wireless charging?
My $20 Bluetooth earbuds have a nice battery charge status display on the case (case + each earbud independently), usb-c charging, and wireless charging. The case is awesome. The earbuds are functional, but not great. But the case is amazing. And if that retails for $20, it obviously does not cost much to make.
From the not-for-airpods-repairs repo containing the CAD files:
Repairs on the 1st and 2nd generation of a certain model of wireless buds cases are notoriously almost impossible. The white plastic shell will get damaged. What if instead of spending hours damaging that shell, we spend just 5 minutes carefully cutting it into two pieces. Then anything inside can be repaired (battery, Lightning connector, …).
But then the white plastic shell will be useless?! Yes. And you can’t buy a replacement part anywhere?! Yes.
This is what this folder is for. To give you that replacement part.
If I understand that correctly, all the internal electric components are re-used. So wireless charging may still work?