I have a 2017 Soul EV and it was bought used. I had it a day and charged it overnight but it yielded only 80 of the 93 miles expected. I plug it in every night after any driving. Every trip gets less and now it’s stoppd at 16 miles expected. I’m losing my wits. Can it recalibrate by running it down to empty before I plug it in again?
If it's reporting 16 miles and you aren't doing much more than that, then I think you have a battery that has gone bad.
I suspect that when you bought the car it had just had a BMS update which clears what the BMS knows about the battery so it reports full range. Over the next little while it then learns just how bad the battery is and reports what is actually correct.
If you have an Android phone then pick up a Konnwei KW902 OBD-II bluetooth adaptor, install Soul Spy and check out your battery before taking the car to the dealer.