I have a duo wireless charger and sometimes when I set my phone down to charge, the red light turns on, I come back later, and it has stopped charging at some point and is almost dead.
This has been happening with 3rd party wireless chargers as well. It is fine, then just stops charging.
No change to the connection, this happens with and without a phone case.
last night I used the charger for just my phone, didn't also have watch or buds charging, and it worked. however, that defeats the purpose of a DUO charger, and the issue still happens with my car charger...