I predict that you will depart your BMW dealer with a few hundred dollars less in your wallet (the battery capacity test takes many hours) and with a usable capacity that has magically increased to more than 70% of the nominal usable capacity when new thus not qualifying for a battery pack replacement under the warranty. This seems to be a common experience which makes me believe that BMW can increase the usable capacity by mucking with the battery management system (BMS). Or maybe the process of a full slow discharge followed by a full slow charge to measure the usable capacity recalibrates the BMS so that the usable battery pack capacity increases.
What capacity did your dealer measure? Or did you get just a ">70% of the new nominal usable capacity so no warranty claim" answer? For $150, I would want a usable capacity in kWh.TheMK wrote: ↑Wed Jun 10, 2020 5:37 pmOkay, so I was charged $150 + tax for the battery capacity test. There was also a recall on the fuel pressure sensor that was done at the same time. I can not tell that anything has changed. My batt kappa max is still 13.8kWh. I'm going to try to do a full charge again tonight and see what happens. I'm at a loss kind of, since 13.8 is less than 80% of the original capacity.
A generic answer. I should’ve asked the service advisor more questions. I guess I can call him back tomorrow. I had to have a family member pick my car up so that made it hard to talk to someone about it.alohart wrote: ↑Wed Jun 10, 2020 7:30 pmWhat capacity did your dealer measure? Or did you get just a ">70% of the new nominal usable capacity so no warranty claim" answer? For $150, I would want a usable capacity in kWh.TheMK wrote: ↑Wed Jun 10, 2020 5:37 pmOkay, so I was charged $150 + tax for the battery capacity test. There was also a recall on the fuel pressure sensor that was done at the same time. I can not tell that anything has changed. My batt kappa max is still 13.8kWh. I'm going to try to do a full charge again tonight and see what happens. I'm at a loss kind of, since 13.8 is less than 80% of the original capacity.
I live in Dallas. 6.8 million population. 2015 i3, I average 12K miles a year, and my battery range is within 3 miles of when the car was new.Not good for a massive urban city like Los Angeles or London.