The bane of the electric vehicle world (cars, boats, whatever) is energy storage, the density of that storage (how much power can you cram in the space), and how long it takes to charge. Often charging time can make a big difference in the practicality of a device. If I can recharge my car in an hour or two it may be much more practical than having to ensure 10-12 hours "parked" on a charger.
read more »