Beware a lot of this info applies to small batteries and without any accounting for the margins that are built into EV batteries. They are never run to 100% and 0%, what you see as 100% maybe be 90 or 93% and 0% may be 9%. Also the management and cell design (and chemistry) impact all of these. There are extensive data collected by various EV owners. The original Leaf would show 10-20% degradation over 4-5 years in moderate climates, but Teslas and be were EVs with more aggressive thermal and battery charging management do not show nearly as much. If you are interested try to look around and you may find that some cars (including the Bolt) may show as little as 5% degradation over 50K miles.
I don't know the difference between a volt and an amp, but a week ago I met with my salesman who had attended a Porsche meeting in Atlanta last month and he told me that the recommended charging level was 85%. And, from everything I've read, constant charging beyond that level has a significant negative impact on battery life.Fair point, but then again this is not a regular Porsche. This car is the future of Porsche and can do things a 911 can not do. If we have a functioning infrastructure at high speed charging you could have stopped for 20 min, grabbed coffee and a rest and gotten there or back. So it may not be the right car for some, just like an ICE Porsche is not something I have ever been interested in in the past.