@FSKT As an owner of many Teslas since 2012 I have experience with charging, however in this case for Model 3 my personal opinion and that of experienced owners of other models may not be as important as what we are told by the service center. To that end, I am one of the unfortunate P3D owners listed by
@Dannno with a 90% of 260 miles and 100% of 287-290 miles and I am working with my service center to resolve my concern. As much as I am frustrated by conflicting information (even from Tesla sources as noted in posts above) and data (eg from 3rd party apps), ultimately my only path to a solution is through Tesla service.
What I am being told by my service center (via the Tesla engineering team) is that the way in which Model 3 rebalances its battery is different from the other Tesla models.
For Model 3 apparently sitting plugged in at 90% charge is what triggers battery rebalancing. What I have been asked to do is to leave it at 90% charge whenever it is plugged in and to allow the car to sleep during this time. That is, while it is sleeping at 90% I shouldn’t disturb it (i.e. check my app or other status including 3rd party apps). I am supposed to do this for 4 more weeks (apparently it didn’t sleep well enough in the first 2 weeks of doing this) since it can take some time for the range to adjust after rebalancing.
Since some posters have noted an improvement from doing a 10-100% charge I will also try this one day, but after doing this will continue to leave at 90% sleeping as much as possible. I refer to the P3D as my "baby" and now it needs to sleep like one too.