So, I found this proposed device today - supposed to be coming in 2022:
Since I live in an apartment, it seems like a worthwhile thing to have.
I have signed up for further information, and if you also fall into the demographic (EV owner without charging ability at home), you might want to take a look.
Portable EV Charging | ZipCharge Go - a powerbank for your EV | London
Charge anywhere you park. The ZipCharge Go is the world's first portable EV charger for personal use at home, work and on the go. Our chargers are part of a global portable EV charging network to provide affordable, convenient EV charging to everyone.
www.zipcharge.global
I have signed up for further information, and if you also fall into the demographic (EV owner without charging ability at home), you might want to take a look.