I don't have to tell you, but that makes absolutely no sense whatsoever
How could it report at all about the battery if it's not connected to it? Where is this report of a full charge coming from if it doesn't see the battery? If it does have a sound connection to the battery to report on it's state, you'd think it would have a sound enough connection to charge it too.
I understand that the data circuit is probably separate from the charging circuit, but then the data circuit should be reporting, or at least displaying symptoms of there being a problem with the charging circuit.
Reporting and displaying everything as normal, but not actually doing anything makes no sense.
I've been dealing with computers for a long time, so I know that it's a machine and there's always an answer. It's only doing what it thinks it was told to do.