Engineering360: "Generate and Store with an Integrated Mobile Energy Solution"

This is a good idea. But, it's really late to the party. Remember when cars were 6v, and they changed to 12v? These days, the only 12v systems are cars. Tractors, tools, and other DC loads/systems are usually higher than 12v.

I'd like to see a car alternator without an internal ground, so you could join two in series to get 24v. It could always be grounded, as usual, if you want. But how can you "unground" existing ones in use today?

Where was this when 12v was more popular? It's also probably too late to come out with products made for 6v cars.