Well my Zs EV is 15 months old and had done over 12,000km. My charging routine is 1. Using solar energy from my 5kW roof when sun shines (about 90% of the energy I use) 2. Using the home charger supplied with the car to balance cells and top up in dull weather 3. There are reasons why 80% charge is mandated for public fast chargers. First, they have to allow for badly designed cars like Nissans whose batteries have no liquid cooling system. Second it is good practice anyway not to push fast charging to its limits, Lithium batteries are still relatively new and one should be cautious about creating any kind of fire hazard. Personally as a retired electronics engineer I would be very cautious about shoving something like 30 Kw/H of energy into a battery in less than an hour.
BTW the biggest problem I have had with my MG is the navigation system which I have not been able to update!