Let's say a battery is quickly removable and is capable of being replaced in several minutes. The removed battery still has to be rapidly recharged for a future battery replacement. Musk's side show back in the day was just letting people know that Tesla batteries could be replaced.
My thought was instead of having gas stations, there would be battery replacement stations for EVs.
In that scenario the station would have to have a surplus of batteries much like the propane tank swap model......you don’t own the battery you just pay a fee for charge and use.