A really cool piece of kit, but it just shows you that it is important to develop a minimal viable product with as little financial outlay and time as possible. An example of a company that tried to reach a little too far with having to redesign and reinvent too many components.

It also shows that consumer cost and not just performance is a driving force for success. As well as the energy sector being a tough nut-to-crack. Successes in the fuel cell charger sector seem to be in incremental increases in performance, but it looks like it won't be long before they out-compete their battery counterparts.