> Is that something they do Pretty much. There's a catalogue of EVs here: https://ev-database.org/ https://ev-database.org/ Where nominal and usable capacity

> Is that something they do Pretty much. There's a catalogue of EVs here: https://ev-database.org/ https://ev-database.org/ Where nominal and usable capacity is stated. Currently even Tesla includes a few kWh of buffer capacity. State of charge in li-ion batteries isn't a straightforward thing anyway. 4.2V used to be considered 100%, but nowadays some chemistries allow for going up to 4.35V safely - doesn't sound like much, but it translates to ~15% more capacity.