Kawasaki already makes the H2, a motorcycle with a supercharger. Motorcycle.com has put some patent and trademark application pieces together that strongly indicate that an electric supercharger is currently under development.
Previously, electric superchargers have been a joke. I’ve seen devices that are basically 12-volt fans, running off the starter battery, spliced into a car’s intake system and allegedly cramming more air into the engine. The actual performance benefits of these systems is either none, or negligible.
But the way Kawasaki is going about it, this might actually work. The electric supercharger would run off the much larger battery of a hybrid motorcycle. These are far more powerful than a regular starter battery. In short bursts, they could supply enough power for an electric supercharger to actually be effective. While the old electric superchargers were built and sold by no-name snake-oil companies, Kawasaki is a reputable business. They wouldn’t be doing it if it didn’t work.