In terms of design, and considering the current state of affordable, readily available (read: non-experimental) battery technology, a satisfactory EV motorcycle is a much bigger design challenge than any EV car.
The reason why is simple: Space.
Unless all you plan to use your motorbike for is a quick run to the shops/work/school and back, range anxiety is absolutely a thing. I've both lived with EV motorcycles and spent many years of my life doing both short and long commutes on motorbikes, so I'm definitely speaking from experience here, and not just theorizing.
As emissions restrictions tighten in countries around the world, there's naturally interest in EV conversions of ICE machines for some people. Thanks to the inherent spatial restrictions on bikes, you'll find far more interesting EV car and truck (and other four-wheeler) projects than motorcycles at this point in time.
That is, of course, if you haven't heard of High Field. It's a custom shop in Utsunomiya, Tochigi Prefecture, Japan, that specializes in all things Harley-Davidson. They've been in operation for a couple of decades now, and are well respected in the local custom community.
In September 2024, with the help of the EV conversion experts at OZ Motors, it finished the prototype for what it hopes will become a new, readily available EV conversion kit for a Harley-Davidson Fat Boy. Just a couple of months later, Harley-Davidson motorcycle designer Dais Nagao even stopped by to check the bike out and go for a ride.
