This article is completely missing any stats about how effective such a range extender would be.

I came across this page last week about EV charging using a generator:

> A typical EV such as the Volkswagen ID.4 has a 75 kWh battery that allows it to drive about 275 miles on a single charge. That works out to around 3.5 miles of range per 1 kWh of charge. Now let’s assume you have a 2.2kW generator that can output 1,800 watts continuously. If you ran the generator for 4 hours, it would produce around 7 kWh of energy. Now, that’s assuming 100% transfer efficiency, etc. So, in 4 hours of driving, it could possibly add maybe 24 miles of range. But things being not 100% efficient, it would be lucky to add perhaps 15 to 20 miles of range to a 250-mile trip.

https://www.rvtravel.com/rv-electricity-generator-in-back-of...