Most "comes-with-the-car" USA level 1 chargers are actually capable of accepting 240v so operating as a ~3kw level 2 charger if you're okay with hacking a diffe

Most "comes-with-the-car" USA level 1 chargers are actually capable of accepting 240v so operating as a ~3kw level 2 charger if you're okay with hacking a different plug on to it (or using an adapter which may be controversial...) https://www.gm-volt.com/threads/2016-volt-120v-evse-is-l1-l2-conversion-capable.218442/?id=218442 https://www.gm-volt.com/threads/2016-volt-120v-evse-is-l1-l2... I've confirmed this first-hand with several different models.