No, mine was sitting at Volvo for virtually a month waiting for a part and lost hardly any charge.
The other thing to consider is that it’s not recommended to leave it sitting fully charged or with a very low battery. It depends on the actual EV as well as to what they recommend to charge it to for daily driving.
Also, have a look at ev.database.org/uk for real-world ranges.
EX30 SMER Ultra